This rifle was purchased from SIR in Winnipeg, it was a clearance item and they are now all sold out.  It does have a mismatched serial numbers, bolt and receiver.  It was part of a batch or arsenal refinished and stored rifles and came with some ot the waxed paper still attached.  The Polish rifles were reputed to be the best quality M44's that were manufactured, and  the later ones never saw hard use as they were quickly phased out by the SKS rifle.  I have used this rifle for plinking and can hit a 2'x3' target at 500yds.  I think it was another good buy.