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Remington Serial Number Page completely re-written. Thu, 18 Dec 2014
Source #18, the Sheridan Binder, gives us Remington factory production numbers with a granularity of 1-month increments. It took a loooong time, but I've finally typed it all in. Behold, the Mother Of All Serial Number Pages! (:

Hammond and Blickensderfer pages updated! Thu, 18 Dec 2014
Peter Weil submitted his lists of documented serial numbers for Hammonds and Blicks, and so I've added his research as Sources #39 and #40 and added his observed numbers to the relevant pages. Thanks Peter!

Demountable page updated Thu, 18 Dec 2014
I found some new info on Demountable in Source #18, so added that to the Demountable page.

Olivetti Graphika serial numbers added to Olivetti page Thu, 18 Dec 2014
Olivetti Graphika serial numbers added to Olivetti page, thanks to Rob Bowker alerting me to some information from collector Domenico Scarzello in Italy.

Olivetti Page updated yet again! Thu, 18 Dec 2014
Thanks to a sheet of info from collector Enrico Morozzi in Italy, we have more accurate and complete serial number ranges for the oldest Olivetti standards and a few other categories.

Bennett/Junior Pages Updated Thu, 18 Dec 2014
Thanks to an email alert from ProfessorC about a tidbit of info dropped in the Yahoo groups by Thomas Furtig, we now have some info about the different models. No luck with dates to serial numbers yet.

Blickensderfer Page Updated! Thu, 18 Dec 2014
Thanks to Georg Sommeregger for alerting me to Source #32: "The Five-Pound Secretary. An Illustrated History of the Blickensderfer Typewriter" by R. Blickensderfer and P. Robert - and providing a table of serial numbers for Blicks, we now have Blick years covered with serial numbers in range. Be careful, these are Dec 31 numbers, not Jan 1 like you're used to. (:

Bijou serials updated! Thu, 18 Dec 2014
Thanks to the research and compiling efforts of Nick Beland, assisted by information provided by Georg Sommeregger, we now have new, and we think better numbers for Erika. We're currently debating splitting Erika away from S&N and giving Erika it's own serial number page. There's been quite a lot of updating for DDR manufacturers, and more is coming!

Robotron Serials now Available! Thu, 18 Dec 2014
Thanks to the research and compiling efforts of Nick Beland, assisted by information provided by Georg Sommeregger, we now have good numbers for Robotron. Nick is also doing research on Erika which should result in better numbers for that manufacturer soon as well.

OLYMPIA page updated and corrected Thu, 18 Dec 2014
The OLYMPIA page has been updated and corrected. OMEF 1980 expanded the serial number range of existing models (SM models gained *13* years of new serial number data and is now complete from 1950 to 1979!)

In addition to expanded and corrected date ranges for SM1,2,3,4,5,7,8,9, SF & Traveller, SG Models and most of the SGE models, we now have coverage up to 1979 for: Olympiette, Report, SGE 77,65,60,45 and SKM, models that we had nothing at all on before.

There's some confusion between Schramm 62 and OMEF 80 on the SM2 model, similar to the confusion over Olivetti Lettera 22's. In both cases the data from both sources is presented, with a note stating which I think is more credible.

If you've dated your Olympia before, please date it again using the new data. I had to correct a few typos made in the original numbers from Schumann's data. If you weren't able to find your date before, try it now!