Originally Posted by
rustystrings61
I'm inclined to say yes, 1963 - and the serial number falls between two bikes dated by date codes on hub lockrings, no. 179365 from 1961 and no. 190932 dated 1965. Put that together with the one-year-only BB variant and yes, 1963.
Right! I also assumed the same thing. I still need to check the hub locknuts I keep forgetting to do so.