" Looks like Victory or Triomphe cranks"
I agree. Either way they were a real buy, seen them $35-$75 at swap meets. Victory & Triomphe cranks are hard to tell apart. The Triomphe is a bit lighter weight, the arms running out to the chain ring attachments are a bit thicker on the Victory (stiffer?). Both pretty beefy though & they will take down to a 35 tooth inner ring so you could make a compact crankset if you could find the rings. Don