dolk your webpage is the shit!
I'm hoping that is a good thing!
They really don't know what the purple mark is all about. It shows up in most Polish stocks, but not all of them. There is a month and year and the month is in Polish.
Mine is not really a "polish" M44, It is a Russian M44 made in Izhevsk arsenal in 1944. Probably a WWII rifle sold tor transferred to Poland. It has been polished up (like a Polish M44 receiver is) and a new Polish stock put on it probably during a Polish refurbishment. The bolt, barrel, mag plate all match including the prefix letters and they are all the same font, so it is probably all original. The butt plate only has the numbers and no prefix, so my guess is the butt plate was changed when the stock when on......maybe. It has all the makings of a Polish rifle except it was originally made in Russia. They are not real rare and are around.
The Polish M44's (made in Poland) are identical.
You can see it here
http://www.thedolk.com/M44_3411/index.html
I don't know how I missed your photos of the rifle above (walking dead again), but like JYD says, looks like a Russian stock. Probably the one that goes on my rifle!
They were a bit like the Finns, they used everything over and over again. but when they refurbished them, they put new stocks on and they look new again. If they had a Hungarian bolt laying around, they'd use it.
Dolk