I don't think that's a serial #. Many manufacturers stamped batch numbers on sets of parts where fit may have been particular, like sliding front rise panels.

Quote Originally Posted by KingPicks View Post
When you say the serial # was behind the front rise, can you be more specific? I would love to find a number on this one but all I have found is the V11 stamp as depicted in my original photos. That was located on the rear plate underneath the film back.