Norme, thanks for posting the picture of what to look for...
Wlyon and Norme, I checked the 1910 side plate and it has the last two digits of the serial on the bottom as well as on the bottom of the take-down lever.
The picture below shows the bottom of the release level and the side plate.
Gosh, I had taken the thing apart and cleaned it very carefully and never noticed the bottoms of take-down lever or the side plate as being marked.
I love this place...I always learn something new.
