I have a frame with a headbadge that reads 1930-32,48,51,53,54,55. The ebay frame has 1930-32,48,51,53,54 (no 55), which may imply that it's a 1955-56 frame (just my theory).

The OPs bike is obviously older, but not the same headbadge style. For the mid-late 60's bikes that I have, the headbadge is frejus torino with the rainbow design.