Possible Bulova Date King
This watch is similar to the Date King 'E', there are examples in the database that are SS cases and different dial pattern. Not sure what the yellow gold version would be. Watch has 10kt yellow RGP case (#2525) with stainless back dated M6. Movement is the 30 jewel 10CRACD dated M6. Has a champagne dial with calendar window. Anti-magnetic, shock resistant, waterproof. Replacement strap.
Looks like a Date King unknown variant.
EDIT: It looks very much like the "E" to me.
In reply to Looks like a Date King by William Smith
The E in the ads has a sort of crosshatch pattern; but otherwise is a good match. The ads do not state yellow or white/stainless, but the already identified Es in the database are stainless and have similar dial patterns to the ads.
I think that is Date King "E" with nonoriginal strap, nice clean watch
Date King, but not the E. That has a linen dial, this has Butler dial.
Nice one.
Generic Date King and another fine example of your restoration talents.
Hmmm, 30 jewel Date King? Believe they were all 17 j. Mid sixties we have Commanders with 30 jewels but I don't see a match so far.
I'm still at Unknown
In reply to Hmmm, 30 jewel Date King? by Geoff Baker
In reply to here are three examples of by Andersok
Yeah, sorry about that Ken, my bad. As I was looking through ads this AM I suddenly realized the same thing, I found several 30j DK ads.
Looks to be a match to the Date King 'F'
LineBook 162 1966

Busy Day My Anderson - keep on digging!
1965 Bulova Date King F