Well, first off, welcome to the forum Justin.
And here, is a couple more cents.
What you have is a 49, for sure. It has a bottom pinned stock ferrule... these were only used on the earliest SKSs...including the prototypes, at the changeover from spike to blade, which I highly suspect happened late in 49...they began to top pin them...like every other SKS since, from any nationality.
Yours has been refurbed at some point, 49 and early 50 covers will only work on the original looped take down cover. During the refurb process, the covers would often be scrubbed and restamped, your cover appears to me to be VERY similarly scrubbed to a 49 cover I bought earlier this year from a Russian who gets his stuff directly from old military buddies who work at the 'recycling' program.
I purchased what appears to be a late 49 early 50...missing stock, trigger group, magazine, receiver cover, original gas tube, and it was a top pinned blade cut ferrule. I then bought the majority of my parts from an early 50 to refurbish it as best I could. I haven't brought myself to attempt to remove the ferrule to see if the barrel is scored for both top and bottom pin options. Another thing that points to a refurb done on yours is the fact it has the pin on the bottom of the magazine for the stud that was later added to retain the spring. Finding a 49 magazine is very difficult...as I suspect the springs likely were lost without a way to retain them....I think they tossed these at refurb and never reused them. I have no proof of that other than they are damn near impossible to find, the only one I have seen had a TERRIBLE Canadian 5 round mod pin buggering it up....other than that, only on certifiable very light refurb 49s. My search is ongoing.
Now, I am not sure mine is a 49, but I am trying to get it there. I doubt I will attempt to get it back to the spike though, because the stock and bayonet are ridiculous expensive...(although,I did a pretty decent fake with a T53 bayonet). The REAL problem is getting that bleeding bottom pinned stock ferrule. These are smaller than the standard SKS ferrule as well, to deal with the skinnier stock...I believe somebody had a fun job modding your stock to fit it...but, I think that happened a long time ago...probably pre-Sputnik even.
Mine happens to be an EO btw...my research is ongoing about when the serial prefixes changed keep me posted, there aren't many EOs to go by.
I think someone tried very hard to keep your gun as close to original at refurb. I think many might have received a later cover, which will actually work. The original covers likely got set aside when they ran out of looped take down lever guns requiring them. The cover I bought was partially scrubbed...poorly, and then lightly sprayed with the BBQ paint to prevent corrosion, and then it was mothballed until my guy was able to dig one up. Since your receiver and cover stamps appear to be identical, I wouldn't be shocked if the receiver was scrubbed and restamped too. Whether a totally new serial was applied is something I am curious about...and if they would have resumed with a serial scheme that was current when it was refurbed? If that is the case, then serial data on Russians might be a little useless with the exception of as issued, non refurbs. I can only speculate...and it hurts my brain a little sometimes.
If we can only rely on the hardware used, that stock ferrule is going DING DING DING....I am a 1949.
I am able to have the luxury of either having a scrubbed blank 49 cover on mine, or a 50 cover that matches most of my replacement parts. I am pretty darn happy with the blued blade I put on it, vs. trying to locate that ferrule...and forking over the equal sum for another SKS for a stock and spike....with my luck, I would pull my ferrule and find it was originally supposed to have a blade in the first place.
Westrifle's reputation aside, nobody is going to try fake that ferrule...I think everything done to your rifle was at refurb...in Russia.