Hi guys, I'm obviously new to this site. I recently picked up what I thought was a "standard" Mosin Nagant, but after some amateur research I'm thinking I have something slightly different. Is this an M27? I look forward to your comments.
If that's indeed the double header then the receiver is 100 years old or so. The barrel however may be Finnish made at Tikka but you could research that.
You have a Tikka-barreled M28 Finnish rifle. The 'SY' was the antecedent of the well-known 'Sk.Y', the designation for the Finnish Civil Guard. Look on the right side of the barrel shank for a Civil Guard District number that starts with an 'S.'. These are excellent rifles, and not commonly encountered with the type if rear sling swivel shown in your pic.
Pat