Yeah, I looked up on the net. It's a gas pumping gauge. They were called clockface pumps, but it's not a clock. Here's a link to a buncha pictures of them.
Well. that explains why I can't seem to find a clock. Funny, over the years, I discovered a few of the gallon gauge ones, but, silly me, I kept looking for a clock one.
Still, I got to admit the gallon ones are cool too.
Nope, can't say that I do. Going to car shows, I haven't seen any either, but I have seen the pumps with the sight glass and the gas flowing. I don't know why they were there or what their purpose was.