It certainly has the characteristics of a '53 with the early tabbed gas tube takedown lever. Definitely a refurb though. Those yellow/amber laminate stocks, irregardless of what gun they are on, are the immediate tell. Carbines with ruby red laminates on letter guns, those are much more difficult to discern. I suspect that some of the metal may be reblued like P32 suggests too.
"PB" prefix is not one I have a ton of in the database. The only confirmed years I see in a quick search are '49, '53 Izhevsk, & '56 with a strongly suspected group of three refurb '51s in there with all '51 characteristics. I don't have a '53 Tula with this prefix, but that probably only means I haven't seen it. The full year between '51 to '53 would be the minimum expected progression needed to reuse this prefix too, so '53 is the most logical guess here.