Looking at "old-omega booklets - you can find a lot of abbreviations.

ST... steel case
BA... solid gold
MD...gold plated ?

PN - CD - GD - BL .... stands for?

Thanks for your help

Horst

 

The great Chuck Maddox has done this for us

http://www.chronomaddox.com/casereferenceguide.html

 

Thanks for your link - but no explanation what PN - CD - GD - BL means.

 

Northernman posted this a while ago, may be of some help but I'm not familiar with "PN".

http://omegaforums.net/threads/serial-numbers-omega-codes.9464/

 

PN = platinum, perhaps?

 

Platinum was abbreviated PA before the mapics code from 1962, then it´s AT.

 

CD is for yellow gold capped

 

CB = la Centrale Boîtes
CK = Staybrite Steel
HF = Huguenin Frères
OJ = Or Jeune ( yellow gold )