RickR

Thank You, Terry! That information helps ALOT! Except now my wife is broken hearted, she bought the clock at an auction and was pretty excited about getting "a genuine car clock" (auctioneer's guess). I'm happy with it being a travel clock, and it actually keeps good time. Thanks again, Rick and Diane

The clock is 3 3/4 in overall diameter. The bulge on the back is 2 1/4 across. There isn't an obvious way to mount a bracket to it.

Greetings! We just found an interesting old clock and would like to know more about it. Like how to open it without breaking something. And were these really used in cars?