7.62x54. Paid 150$ for it and it is in excellent shape for its age. I also picked up a milsurp 300 round sealed tin of x54 for 80$+tax, good deal or did I get raped? Seemed reasonable to me but I went into the store intending to buy nothing and saw it, so I bought it rather unresearched. Anything special I need to know about this rifle? Are there any websites that I can plug in a serial no off the side of this rifle into and see if/when it was serviced?