Rolex gurus - help to identify a 1665 case

[Brightight]

I have a 1665 case which I've always believed to be old style MBW, I wonder if someone could confirm this or identify what the case may be. The reason for doubt, and it may be ignorance on my part, is the case does not carry the "Orig Polex" mark. It does have the three piece bezel a la gen which looks identical to the pics on the Eurotimez site, and the markings on the back inside and outside are consistent with the MBW as is the small helium valve. A couple of pics -

Any assistance gratefully accepted

[mjmj]

I think the orig polex applies to the 5513 and 1680 cases.

[ubiquitous]

mjmj is correct; 1665 case does not have the POLEX designation at 12:00; only the 5513 and '1680' (same as the 5513) case.

Brightight- Your's is an MBW/MBK case.

[Brightight]

mjmj is correct; 1665 case does not have the POLEX designation at 12:00; only the 5513 and '1680' (same as the 5513) case.

Brightight- Your's is an MBW/MBK case.

Yay!! Thanks Ubi!

[ShawnBeever]

I have 2 MBW 1665 cases one supplied about 4 years ago by 'George' from Greece, who was the only dealer I was aware of at the time SN 5790168, it takes gen parts.

The second one supplied by Eurotimez about 18 mths ago is identical, takes gen. parts but has the SN 5790768

Both supplied as Gen MBW whatever that means.

[ubiquitous]

MBWs serials varied- I have an old MBW 1665 case here with serial 5790134.