When did Tissot start using in house movements?
Is this a Tissot movement (from a recent ebay auction - no I didn't buy it):
Can anyone ID this Tissot's movement?
The reason I am asking is I have this RADIANT - which has basically the same movement (click is probably earlier style, has a triangular rather than round hairspring stud, it is pin-set and it uses and earlier style case screw - certainly the base calibre is related). I can't find any reference to RADIANT as a maker, but the numbers on the dial are also identical. Swiss silver case with Glasgow hallmarks for 1922. Case mark is JW. The lume is incredibly well preserved.
I think that whoever made the Tissot probably also made my RADIANT. I am not planning on removing the dial until I work out how to stabilize the lume in the hands...