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Derived from a catalogue with Omega components from 1993. This overview is aimed to bring some knowledge on Omega watch case materials to the reader. Now you know what the material codes in Omega references mean.

Omega material codes:

Code Material (Metal)
AB Platinum + yellow gold 18 ct.
AT Platinum
BA Yellow gold 18 ct.
BB Rose gold 18 ct.
BC White gold 18 ct.
BD Yellow gold 14 ct.
BF White gold 14 ct.
BG Yellow gold 9 ct.
BJ Gold, Multi-coloured 18 ct.
BK Gold, bezel steel
BL Rose gold 9 ct.
BP Rose gold 18 ct.
BR Gold two-coloured 18 ct.
BT Yellow gold 18 ct. + titanium
BU Yellow gold 18 ct.
bezel aluminium
CD Yellow gold cap 14 ct.
CE Rose gold cap 14 ct.
DA Steel + yellow gold 18 ct.
DB Steel + rose gold 18 ct.
DC Bezel white gold
18 ct. on steel
DD Steel + yellow gold 14 ct.
DE Steel + rose gold 18 ct.
DF Steel + yellow gold 18 ct.
DG Rose gold bezel
18 ct. on steel
DH Rose gold bezel
18 ct. on steel
DL Two-coloured plated
20M yellow
DM Two-coloured plated
10M 1N14
DN Two-coloured plated 10Y
1N14 steel bracelet
DP Steel, rose gold 18 ct.
DR Rose gold bezel
18 ct. on steel
DS Bezel yellow gold
14 ct. on steel
DX Two-coloured plated
10M yellow
ED Plated 10M 2N18
EF Plated 10M 1N14
EX Plated 10M 1N14
FD Plated 80M yellow
FE Plated 80M pink
GD Plated 80M yellow
GF Plated 80M white
HG Plated 40M yellow
HH Plated two-coloured 40M
JD Plated 40M yellow
JE Plated 40M Rose
KD Plated 20M back
40M yellow
KF Plated 20M back
40M white
LD Plated 20M 2N18
LE Plated 20M rose
LX Plated 20M 1N14
MD Plated 20M yellow
ME Plated 20M rose
MF Plated 20M white
MK Plated 20M back
and bezel steel
MP Plated 20M two-coloured
MR Chromium-plated black,
bezel 20M yellow
ND Plated 20M yellow
on steel
OA Plated 40M yellow
on steel
PA Plated 40M yellow
on steel, steelback
PE Minature clock
RP Silver plated
40M yellow
RS Silver 0.925
SC PVD grey (steel)
SE PVD yellow
SI Steel + titanium
SO Oxidized Steel
SR Chromium-plated black
ST Steel
SU Steel, aluminium ring
TA Titanium + gold
case and bracelet
TB Titanium + rose gold
bracelet titanium + rose gold
TD Titanium + plated 20M yellow,
brac.: titanium + pl. 10M
TE Titanium + PVD yellow
TI Titanium
TL Titanium/Tantalium
+ pink gold 18 ct.
TR Titanium + pink gold
titanium bracelet
TT Titanium + palladium
titanium bracelet
TZ Titanium + rose gold
bracelet: gold logo
UT Chromium-plated
YA Hard metal yellow
YR Hard metal black
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