| Model | Identify the specific Omega model (e.g., Speedmaster, Seamaster, Constellation) |
| Age | Determine the watch's age; vintage pieces from the 1950s-1970s are often more valuable |
| Rarity | Limited editions and discontinued models typically command higher prices |
| Condition | Assess overall condition, including dial, case, crystal, and movement |
| Originality | Original parts, especially dial and movement, significantly impact value |
| Provenance | Documentation (original box, papers, warranty card) can increase value |
| Historical Significance | Models associated with significant events (e.g., Speedmaster "Moonwatch") are more valuable |
| Material | Case and bracelet material (e.g., stainless steel, gold, platinum) affects value |
| Movement | Identify the type of movement (automatic, manual, or quartz) |
| Market Demand | Current collector interest and market trends influence prices |
| Serial Number | Helps in determining the exact production year and authenticity |
| Dial Characteristics | Color, style, and condition of hour markers impact value |
| Crystal Type | Sapphire, mineral, or acrylic - each affects value differently |
| Complications | Additional features like chronographs or GMTs can increase value |
| Brand Recognition | Omega's strong reputation contributes to value retention |
| Maintenance History | Proper care and service records can positively influence value |