I have a question about this case. I have been restoring a Waltham model 1883 circa 1886 SW/LS 11jewels in it's original Blauer case. Patented Nov,1883 with invisible joints,coin silver 3oz with an original glass crystal.Is there any information anywhere about this case,I have looked everywhere with no luck.Your help is appreciated.RB

Welcome to Chapter 185 Randy!

This is a good place to find the horological info you need. One of the best tools available in that regard is the "Find or Search" button on the tool bar at the top of the page.

Here is a link to a search I just ran on "invisible joint". Check out the 7 prior discussion thread "hits" I got on this topic.

One of those hits concerns a Waltham M92 in a coin silver invisible joint case from my collection.

Hope this info helps!

Thanks for the help.This is the first time I have seen anything related to a invisible joint the only thing is mine says Blauer on top invisible joint in the middle and coin on the bottom.And on the inside cover there's a pat date nov 6,1883 and a 3 in the middle and sr# on the bottom.Thanks for your help again RB.

Randy - have you seen the article by John Wilterding on "The Invisible Joint Case Company - An Enigma" in the February 1998 Bulletin? It is a good article with history and patent information.

You can also check the patent database and find out that Robert John Quigley patented a case joint on November 6, 1883, patent #288184. Then you can go to the US Patent and Trademark Office web site to get the images of the patent.

Thanks Tom,I would have never of thought of that
Thank You RB.