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. yellow-pink |
| 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. steelback |
| 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 steelback |
| EX | Plated 10M 1N14 |
| FD | Plated 80M yellow |
| FE | Plated 80M pink |
| GD | Plated 80M yellow steelback |
| GF | Plated 80M white steelback |
| HG | Plated 40M yellow |
| HH | Plated two-coloured 40M |
| JD | Plated 40M yellow steelback |
| JE | Plated 40M Rose steelback |
| 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 steelback |
| ME | Plated 20M rose steelback |
| MF | Plated 20M white steelback |
| MK | Plated 20M back and bezel steel |
| MP | Plated 20M two-coloured yellow-pink |
| 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 |
