I just got in trade a late-1960s 564 Constellation with what I regard as the wrong back. It is a 166027 and there is no Connie marking on it. So I bought a 564 back, ref 168017. It seems to be 31mm wide. DISASTER!! My case is 34.5mm!. Do I stand any serious chance of finding a 34.5mm Constellation back and does anyone know which Connie should take this 31mm back please?
Search EBay for the same model and if the inside of the back is shown. Get the reference number to know which back you need DON