I have a Lemania, probably from the late 50's and I suspect it might have a radium dial, but I'm far from sure. When did Omega/Lemania stop using radium and start using tritium? Alos, how can I check if my dial hars radium or tritium? The dots on the dial with radium/tritium are quite small, and so is the filling in the hands but that doesn't matter, I still want to know.
A pic of the watch in question.