Finnish P08 - What year?

[byf43]

Well the problem is that there aren't that many other marks.

I've found some rather scattered marks. An X, a V and a C on the frame hidden behind the grip shells. Just above the trigger hidden behind the "takedown plate" is a 4 and a P. The number 4 is also stamped near the barrel on the "slide" along with an & and two I's.

Inside the frame is an encircled N. To the right in the picture you can see 75 which is a serial stamp (?). That is odd since the serial is actually 277. It seems strange that this part has been replaced but none other (except for the Tikka barrel)?