: Stick to platforms with robust eBay Authenticity Guarantees or established specialists like Hodinkee .

: Find rare or discontinued "New Old Stock" (NOS) that local dealers don't carry. Navigating Authenticity and the "Gray Market"

: Browse thousands of models from home without travel.

: High-quality images are vital; blurry photos can hide "Frankenstein" watches—pieces made from mismatched parts.