I have a USA 214 movement that is very clearly engraved "N8" at the top of the movement. Parts are all gold tone except the tuning fork. It is in a "spaceview" watch that I am sure is a conversion. I am just trying to learn more about what watch the movement might have come from. I cannot seem to find any record of a USA 214 from 1978 (which is what "N8" would indicate. Is it just that N8 is meaningless, and I need the number on the back/inside of the caseback to find the watch, which because this is a mismatch, I cannot do?
BTW: The bottom of the outside caseback says "C26467" above an "M7." It says "10 KT. GOLD FILLED BEZEL" along the top of the outside caseback.
Inside caseback has "2700" stamped in black ink above "12-6," also stamped in black ink. Next to those, at sort of an angle and upsidedown there is a smaller "*494" stamped in a darker black ink.