Well, these jerseys are all from Italy and G.C. precludes some others with differing script. I was thinking it was an Italian phrase related to Cycle Club, but google translate does not help me !!Well-Felsina is a wine and GC can mean …many things!Grande Cuvée ( on the wine theme) or general classification in road cycle racing.So I think the GC means general classification on cycle jerseys generally and was a play on words re this this Cambridge jersey .
Ah, that sounds like it. My Italian is not so molte bene.......thanks JimMost likely Gruppo Ciclo or Gruppo Ciclistico. Lit: Group Cycle or Group Cycling. So yes, Cycle Club would be the best English version.