I just purchased a 400 day anniversary clock the name is Kundo and made in West Germany on the back I have been trying to find out how old this could actually be. And it has the original key, original glass dome and brass on the base it also has a diamond shape face.

Tammy Sullivan, March 2013

http://clockinfo.com/posts/5190

This chap claims 1950 ish

http://www.flickr.com/photos/spacemanspiff27/sets/72157622414432893/

How to tell if working ? Balance balls move back and forth - hands rotate.

Good luck...

Peccavi, March 2013