As I just picked up the Gyromatics Arrow Dial from service, I now had the opportunity to take some side-by-side (top-on-top) photos with the other recently found silver sunburst Gyromatic. Both share the same case with small differences. The Arrow Dial ca...
if my eyesight is not failing me, then the Arrow Dial has a 6250A between the lugs. The other has nothing, so not sure what the Ref is. Movement in both is 31.09. I guess we need an expert to answer your question :) CC