Spalding Kro-Flite RH Iron Set 3-PW w/ Medium Steel Spalding Shafts. I suspect these are vintage, and were made sometime in the 80's or 90's based on the condition of the grips, as well as the fact that they say nothing about Bobby Jones.
Lengths:
3: 38.5"
4: 38"
5: 37.5"
6: 37"
7: 36.5"
8: 36"
9: 35.5"
PW: 35.5"