Search found 41 matches
- Wed Apr 10, 2024 9:10 pm
- Forum: Collecting microscopes and slides
- Topic: Olympus serial number timeline
- Replies: 39
- Views: 34696
Re: Olympus serial number timeline
Thanks Michael - IMT looks an impressive mode, enjoy! I wouldn’t be surprised if Olympus started the numbering at 400,000 for the IMT, so you likely have unit 5001. My data suggests they did that for some of the later objective types, but I’m waiting for more info to trickle in to confirm.
- Wed Apr 10, 2024 10:44 am
- Forum: Collecting microscopes and slides
- Topic: Olympus serial number timeline
- Replies: 39
- Views: 34696
Re: Olympus serial number timeline
Olympus serial number timeline Models K & KH_100424.JPG Olympus serial number timeline Models SZ JM & X_100424.JPG Olympus serial number timeline Models FHF & MF_100424.JPG Olympus serial number timeline Models V VK & VA VT_100424.JPG Olympus serial number timeline Models PM6 PM7 &a...
- Wed Apr 10, 2024 10:42 am
- Forum: Collecting microscopes and slides
- Topic: Olympus serial number timeline
- Replies: 39
- Views: 34696
Re: Olympus serial number timeline
Latest update with 50 new points Models H & VB as above. I'll update objectives soon. Olympus serial number timeline Mixed models pre post 1954_100424.JPG Olympus serial number timeline Models XA KX & MJ POM_100424.JPG Olympus serial number timeline Model ST HS_100424.JPG Olympus serial number t...
- Tue Dec 12, 2023 9:49 am
- Forum: Collecting microscopes and slides
- Topic: Olympus serial number timeline
- Replies: 39
- Views: 34696
- Tue Dec 12, 2023 9:48 am
- Forum: Collecting microscopes and slides
- Topic: Olympus serial number timeline
- Replies: 39
- Views: 34696
Re: Olympus serial number timeline
Olympus serial number timeline Models SZ JM & X_121223.JPG Olympus serial number timeline Models H & VB_121223.JPG Olympus serial number timeline Models FHF & MF_121223.JPG Olympus serial number timeline Models V VK & VA VT_121223.JPG Olympus serial number timeline Models PM6 PM7 &a...
- Tue Dec 12, 2023 9:47 am
- Forum: Collecting microscopes and slides
- Topic: Olympus serial number timeline
- Replies: 39
- Views: 34696
Re: Olympus serial number timeline
Update with 50 new data points, a couple of new models and some reorganisation. Olympus serial number timeline Mixed models pre post 1954_121223.JPG Olympus serial number timeline Model ST HS_121223.JPG Olympus serial number timeline Models G & E_121223.JPG Olympus serial number timeline Models ...
- Tue Oct 10, 2023 12:11 am
- Forum: Collecting microscopes and slides
- Topic: Olympus serial number timeline
- Replies: 39
- Views: 34696
Re: Olympus serial number timeline
Thanks Pete - I hope the timelines are proving useful to readers, they have helped me date my collection. Plus I enjoy watching the timelines develop.
I have more data on old objectives (pre-1953) and different objective types that I'll post once I receive more information.
I have more data on old objectives (pre-1953) and different objective types that I'll post once I receive more information.
- Mon Oct 09, 2023 6:58 am
- Forum: Collecting microscopes and slides
- Topic: Olympus serial number timeline
- Replies: 39
- Views: 34696
- Mon Oct 09, 2023 6:50 am
- Forum: Collecting microscopes and slides
- Topic: Olympus serial number timeline
- Replies: 39
- Views: 34696
Re: Olympus serial number timeline
Latest update with 60 additional data points Olympus serial number timeline Pre 1954 and mixed models_091023.JPG Olympus serial number timeline Model G & ST HS_091023.JPG Olympus serial number timeline Model E & bi tri heads_091023.JPG Olympus serial number timeline Models K & SZ JM_0910...
- Wed Jun 14, 2023 10:09 am
- Forum: Collecting microscopes and slides
- Topic: Olympus serial number timeline
- Replies: 39
- Views: 34696
Re: Olympus serial number timeline
Model X-Tr stereomicroscope and objectives 4X, 20X & 60X added. 4X objective appears split into two serial number groupings: >400,000 and <400,000 Olympus serial number timeline Mixed models V & X_140623.JPG Olympus serial number timeline Mixed models F MF H & PM camera adapter_140623.JPG Ol...
- Wed Jun 14, 2023 10:07 am
- Forum: Collecting microscopes and slides
- Topic: Olympus serial number timeline
- Replies: 39
- Views: 34696
Re: Olympus serial number timeline
Data is coming in very slowly - update with 50 new data points spread across all models Olympus serial number timeline Pre 1954 and mixed models_140623.JPG Olympus serial number timeline Model G & ST HS_140623.JPG Olympus serial number timeline Model E & bi tri heads_140623.JPG Olympus seria...
- Tue Mar 21, 2023 10:02 am
- Forum: Collecting microscopes and slides
- Topic: Olympus serial number timeline
- Replies: 39
- Views: 34696
Re: Olympus serial number timeline
I've finally found time to sort through some of the data I have for objectives. As with the microscope chief bodies and heads, the data suggests the objective serial numbers were reset to start from 200000 in mid-1954. Olympus serial number timeline 10X objectives_200323.JPG Olympus serial number ti...
- Sun Feb 05, 2023 10:51 pm
- Forum: Collecting microscopes and slides
- Topic: Olympus serial number timeline
- Replies: 39
- Views: 34696
Re: Olympus serial number timeline
I've combined the different V models I have data for. There's evidently a couple of different serial number sequences. More data will help clarify relationships within the dataset.
- Sun Feb 05, 2023 10:48 pm
- Forum: Collecting microscopes and slides
- Topic: Olympus serial number timeline
- Replies: 39
- Views: 34696
Re: Olympus serial number timeline
10 new data points and some improvements to layout. It appears the trinocular heads for models E, F & MF follow the same sequence. Olympus serial number timeline Model E & bi tri heads_060223.JPG Olympus serial number timeline Model G & ST HS_060223.JPG Olympus serial number timeline Pre 195...
- Mon Jan 23, 2023 5:48 am
- Forum: Collecting microscopes and slides
- Topic: Olympus serial number timeline
- Replies: 39
- Views: 34696
Re: Olympus serial number timeline
Update with 47 new data points and some models separated to aid with readability Olympus serial number timeline Mixed models pre-1954_230123.jpg Olympus serial number timeline Mixed models_230123.jpg Olympus serial number timeline Models E G STHS_230123.jpg Olympus serial number timeline Models K SZ...
- Wed Nov 23, 2022 5:46 am
- Forum: Collecting microscopes and slides
- Topic: Olympus serial number timeline
- Replies: 39
- Views: 34696
Re: Olympus serial number timeline
New information is only trickling in at present, so please contact me if you can add to the dataset. There's a few updates to each of the graphs. Olympus serial number timeline Mixed models pre-1954_231122.jpg Olympus serial number timeline Mixed models_231122.jpg Olympus serial number timeline Mode...
- Wed Oct 12, 2022 9:25 am
- Forum: Collecting microscopes and slides
- Topic: Olympus serial number timeline
- Replies: 39
- Views: 34696
Re: Olympus serial number timeline
Latest update. I've combined JM with SZ as both models use the same head. Olympus serial number timeline Mixed models pre-1954_121022.jpg Olympus serial number timeline Models E G STHS_121022.jpg Olympus serial number timeline Models K SZJM PM6_121022.jpg Olympus serial number timeline Mixed models_...
- Tue Sep 27, 2022 5:44 am
- Forum: Collecting microscopes and slides
- Topic: Olympus serial number timeline
- Replies: 39
- Views: 34696
Re: Olympus serial number timeline
Some more pre-1954 units have surfaced, plus there's a couple of additions to post-1954 timelines:
- Fri Sep 16, 2022 1:30 am
- Forum: Collecting microscopes and slides
- Topic: Olympus serial number timeline
- Replies: 39
- Views: 34696
- Tue Sep 06, 2022 11:05 am
- Forum: Collecting microscopes and slides
- Topic: Olympus serial number timeline
- Replies: 39
- Views: 34696
Re: Olympus serial number timeline
A few additions:
- Sun Aug 28, 2022 10:30 am
- Forum: Collecting microscopes and slides
- Topic: Olympus serial number timeline
- Replies: 39
- Views: 34696
Re: Olympus serial number timeline
New models and data points have been added to the mixed model graph and a labelling mistake to Homare UCE rectified. I've decided to separate serial numbers below 200000 and pool the models into one graph for now - I've only received data for five of these to date and removing them makes reading the...
- Sun Aug 14, 2022 10:33 am
- Forum: Collecting microscopes and slides
- Topic: Olympus serial number timeline
- Replies: 39
- Views: 34696
Re: Olympus serial number timeline
A few additions:
- Tue Aug 02, 2022 11:03 am
- Forum: Collecting microscopes and slides
- Topic: Olympus serial number timeline
- Replies: 39
- Views: 34696
Re: Olympus serial number timeline
The other thing the combined dataset shows is that the various student ST and HS versions can be grouped into one timeline as follows.
- Tue Aug 02, 2022 10:44 am
- Forum: Collecting microscopes and slides
- Topic: Olympus serial number timeline
- Replies: 39
- Views: 34696
Re: Olympus serial number timeline
I've played around with the data received so far and I think I've found something interesting. Since the early 1950s, there are no serial numbers below 200000, even for models that were released in the 60s and 70s and for which I have a decent number of data points. This suggests to me that sometime...
- Sun Jul 31, 2022 4:25 am
- Forum: Collecting microscopes and slides
- Topic: Olympus serial number timeline
- Replies: 39
- Views: 34696
Re: Olympus serial number timeline
A few additions plus hopefully a slightly more readable format.
- Sun Jul 17, 2022 11:28 am
- Forum: Collecting microscopes and slides
- Topic: Olympus serial number timeline
- Replies: 39
- Views: 34696
Re: Olympus serial number timeline
A decent number of additional data points:
- Tue Jul 12, 2022 3:24 am
- Forum: Collecting microscopes and slides
- Topic: Olympus serial number timeline
- Replies: 39
- Views: 34696
Re: Olympus serial number timeline
Model POM added
- Wed Jun 29, 2022 8:58 pm
- Forum: Collecting microscopes and slides
- Topic: Olympus serial number timeline
- Replies: 39
- Views: 34696
Re: Olympus serial number timeline
Hi all,
I appreciate the details of the plots are not easy to see. If anyone wants an approximate date of manufacture of one the models listed, then you’re welcome to send me your model and serial number and I’ll let you know which known dates it fits between.
I appreciate the details of the plots are not easy to see. If anyone wants an approximate date of manufacture of one the models listed, then you’re welcome to send me your model and serial number and I’ll let you know which known dates it fits between.
- Tue Jun 28, 2022 2:56 am
- Forum: Collecting microscopes and slides
- Topic: Olympus serial number timeline
- Replies: 39
- Views: 34696
Re: Olympus serial number timeline
I am very grateful to have been informed that Olympus Inspection Certificates written in Japanese used the traditional Japanese calendar year system, not the Western calendar year. The traditional Japanese calendar is based on how many years each emperor has reigned since beginning their rule, with ...
- Mon Jun 27, 2022 3:38 am
- Forum: Collecting microscopes and slides
- Topic: Olympus serial number timeline
- Replies: 39
- Views: 34696
Re: Olympus serial number timeline
More models and data points - thanks to all who have provided certificate info.