gas

I was hunting some old farm land yesterday and hit a signal which I thought for sure was a quarter but out popped this guy. I must say that at first glance in the dirt, I really thought I had found a gold coin.. probably my biggest burn to date. :laughing7: These were handed out at SHELL...

Basicly the "Title:" SAY'S IT ALL...I need help in I.D.'ing this gas cap,I'm sure it was a grand old car(late 1930's-40's?)So that's where im at...Need MEASUREMENT'S(?),Approx.5in.> 3in.^,ANY help will be greatly appreciated! HH ALL!!!