This one is unique to my mother's collection. Love the retro big eye look. I can't make out all the markings. But clearly read Juno in an oval and GERMANY. What is  in between, I have no clue. 

It seems to work great, snaps back (with the only slight tug I gave it) and is 100% in tack. There is  plastic encasing over the end, but it is all there. 

Measuring 2 3/8" tall, base 1 1/4" diameter.

Look at all photos. Ask any questions!

Thanks for checking out my Tape Measures!