My sleuthing had led to this:
- The serial is J66340 which puts it in '53.
- From the '53 catalog it looks like this is a Spitfire and I can see that there are at least two trim levels of that model.
- If the painted rims are original to the bike it would make it a base model because the Deluxe had chrome rims.
- I can't see any signs of wear from a tank.
View attachment 151341
One thing that has me scratching my head is that there are 2 small holes on the top of the top tube 6 to 8 inches back of the head tube. I don't think they're for attaching the tank so I'm stumped there.
Anything else you can tell me based on the serial number would be greatly appreciated.