I told him the bike was a 1980 10 speed. I would think he should have had a clue these rims could very well be smooth bead. And he is the owner of the shop of nine years. I think he recommended a bad tire for me to be truthful. I had two blow outs because of this. Thank God the bike was parked when they went off.
I thought smooth-sided rims were gone by 1980 (well, maybe for Varsity or Continental Schwinns)