Metal plate on the bottom side of the plate on a 10AE "AAA" 21JEWELED MOVEMENT..

HELLO I JUST STARTED WORK ON MY 1938-9 BULOVA AMBASSADOR...AND TO MY SURPRIZE I FOUND A METAL PALTE ON TOP OF THE BOTTOM PLATE(DIAL SIDE in case i got that wrong) this is the first time i have seen something like this so i have a few questions...1. did they only put on this type of 10ae 21j movements?..2 was put on for the curve of the dial, for support ? 3. Is the plate there to protect the winding mech?? or simply there for show and doesn't really effect anything(which i doubt) Thanks to anyone who can help answer some of these questions...i will post pictures when i get a chance hopefully soon...

timerestoration's picture
Posted October 25, 2011 - 8:56am

 These plates were put on specific models to support their highly curved dials... without them, the dial could be bent or flattened if too much pressure was applied during installation.

Posted October 25, 2011 - 9:27am

Thank you, Jeff for the quick answer,I thought it had something to do with the dial,which made sense since its curved just like the dial....Its  good idea..goes to show the quality of the watch and the movement itself...