Just done a bit of research and you are correct. Forrest, Greig, McKinnon, Baxter, Henderson all played between 1960-1973. However, Ritchie, Caldow, Shearer, Millar and Wilson all played between 1953-1967. The old brain cells are getting a bit mixed up I fear, but still have memories of 5-0 win over Morton which must have been around 1958.
Never mind, they were good days and I had the privillege of seeing some Gers greats through the 60's and 70's.