Kienzle windup pocketwatch

It is a pocketwatch, but not battery operated. You wind it up. It has "Kienzle" just below the number 12 in cursive. Just below that it says "15 rubis" (not a spelling error). Just above the disc for the second hand it says "antimagnetic".  There is a small dot where the number 6 would be, just above that dot it says "Made in Germany". The hands and dots around the face are made to glow in the dark. The numbers and the hands are a bright gold color. The body of the watch is silver or nickel (something that is not gold, or brass or copper). It has vertical ridges on the back and some weird trianglish shape. It was not designed to have a cover so there are no missing pieces. It is in rather excellent condition and works flawlessly.  I got it from an antique store a number of years ago. I'd like to know its history and what it's worth.

Good