No SY stampe anywere, but the stock was converted in m/28 fassion, because the thicker screws for the bands of the m/27 early configuration do not fit.
Let's see what I can find out next month, when I am in Finlandicon, a buddy there has two m/27 trainers and another a m/91. There are also trainers in m/28-30 configuration.
I will try to talk to Mr. Palokangas too.

Chris
Information
Warning: This is a relatively older thread
This discussion is older than 360 days. Some information contained in it may no longer be current.