Back reads BULOVA M6 10K RGP BEZEL STAINLESS STEEL BACK. No markings inside case,not even any srvice marks.Seems to have original Bulova marked crown.Movement also marked M6 but also has a small 65 on the bottom plate.There's an example of this one in the database naming it as a Senator model.
Hi again Denupnorth. I looked at the "Senator" you mention in the data base. Not much of an explanation how that ID was arrived at. The closest match I could find to yours is the "Banker" in this 1967 ad posted by Bobbee. The cases seem to match, but there are small differences in the dials.

In reply to Hi again Denupnorth. I looked by 1955mercury
I think this 1967 model would confirm there were dial variations for the "Banker" model.

I also looked at the Banker but it doesn't have that crosshair dial and the hands seem different.
In reply to I also looked at the Banker by denupnorth
Do a search for Banker in the data base Den and you will find some others with the cross hairs ID'd as "Banker".
I just saw that,sorry.I'm good with the banker tag.
In reply to I just saw that,sorry.I'm by denupnorth
That's not carved in stone. I could be totally wrong. It's just the closest match I've been able to find Den.
I'm good with Banker. Don't think I'd designate the "G" variant as per the ad used above though. Checking other period Banker watch records and ads to see if we have some info on what constitutes various variants.
Cool Denis, two in the dB, how many more to come?
I say this one is the Banker, (I'd also say the Senator you refer to above needs to be reconsidered.)
Agree with Banker w/o variant
Banker