Found this strange number 3 under the Imperial eagle if my Finnish M91 any idea what it could be I’ve seen the number 2 on m27 and I think M39’s as a kind of accuracy rating,could this be the significance of this oddly placed 3?Also found what looks like the number 11 inside a diamond shape on one of the bolt components ,could this be a polish marking?
https://i.imgur.com/rPuQoK5.jpg
https://i.imgur.com/rPuQoK5.jpg
