Having a love for the mechanical aspects of watchmaking, I'm partial to watches that expose the inner workings of the mechanism, be it through a skeletonized or or open-heart dial. I also have a high appreciation for the craftsmanship that goes into finely decorating a movement.
I always try to be on the lookout for interesting vintage and came across this piece recently. It's a Gruen Verithin 19 jewel pocket watch movement with a particularly interesting dial decorated with miniature clubs around the perimeter. It's been converted to wristwatch format (disappointing) but is still highly appealing to me.
Here's my dilemma. Try as I might, I can't find another example of this model anywhere. It appears to be a similar movement to the one used in the Gruen 50th Verithin. Is it possible that this work was done in the aftermarket and an aftermarket dial added? From what I can make out, the dial appears to have some age as well. I'm still in the process of expanding my knowledge of vintage watches, so any help identifying this movement or information on the model is very much appreciated.
Thanks all in advance.
Here's the 50th Anniversary Verithin