If it has a 1-rivet bullet guide, value's around $750-$800. Add $50-$75 if it has the two-rivet bullet guide. Subtract $50 if the parts have been acid-dipped, leaving sort of a blued finish with no paint. These values are approximate.
Rifles with the dual rivet bullet guides were built with Soviet Tula-supplied receiver and front trunnion assemblies. Not sure whether the rear folding trunnion was Soviet-made or Bulgarian.What makes the 2 rivet bullet guide one worth more?