For sale are several sets of tire valve stems:
Schrader 6300 TR-80 (July 1929 thru June 1930 on 21" wheels) set of 5 NOS stems, rim nuts, dust covers, and core removers $600/set
Schrader TR-83 6700 (May 1930 thru EOP.) Set of 5, mint stems, NOS core removers, replated dust covers $500/set
Dill...