Atlas/Craftsman Serial Numbers and Bearing Dates

I hadn't previously noticed it probably because looking back I see that almost all age related questions the past year have been for 12". In the combined machine database (408 entries to date) there are only 74 10" entries, a third of which show no serial numbers. And there is a large jump or blank range in the 10" serial numbers. They meander up to a little over 8000 and then skip to over 17000. Plus we only have three supposed bearing dates, one of which does not track with the other...

Atlas/Craftsman Serial Numbers and Bearing Dates