It is a big fat 30mm+ diameter 10 1/2 ligne size with 19j LeLocle area made movement. A best from 1908? Gruen 18k special open face. It was obtained 1976 by THE Mae West as a gift to 26 year old friend who is its seller to me. She wrote a fine info piece about it for me in the Ladies forum here. I have asked her to follow this with her comments as well as my own. I would like to know who made the movement that has Gruen numbers on it. It represents the best from Gruen for a ladies watch. Only 2nd I have seen in 50 years.