Congrats,
Ordered one myself, still waiting on a shipping notice.
Those look good, so hope I do as well.
You got three gems. Two are very early 1956, when the Russian techs were in China. The 4912 may have been made with excess parts from the Russian Tula factory. The 17948 is an odd duck, but very cool. Not sure, but it may be transitional between being marked with Russian prefix and with the Jianshe stamp. Just speculating on that, but all three appear to be very early 1956.
Were those hand selects?
Nice - It looks like you have a ton of cleaning to do!
Yes I do, but cosmoline is our friend!
Anybody have sofa space? I might need it when the wife sees another Sig required from the BBT.
Sorry ... have SKS parts spread out on mine at the moment!