Bulova 1959 Bulova 23 "Mystery Dial"
Picked up this Mystery Dial. Might be worth putting into the databasesince it is different than the others.
First, this one is SOLID 14K Gold, the others are RGP. The minute hand is Radium filled unkile the others that are not. BULOVA 23 JEWELS at the top, and SELF WINDING at the bottom are both straight across the face unlike the others that are curved to match the face curve, and the 12 and 6 numerals are significantly smaller. The crown is different - don't know if it is a replacement, or from factory.