Collector Tools
Practical, educational utilities for the considered buyer. Free to use; no signup; nothing leaves your browser.
- Tools
- 7
- Cost
- Free
- Signup
- None
- Privacy
- Local
Watch Size Guide
Find the case-diameter and lug-to-lug range that sit proportionally on your wrist.
Open toolWatch Comparison
Place up to three references side-by-side: dimensions, movement, complications, materials.
Open toolValue Estimator
Educational secondary-market band based on tier, condition, completeness and age.
Open toolAuthenticity Checklist
Weighted 25-point pre-purchase verification across paperwork, exterior, dial, movement.
Open toolMovement Decoder
Identify the manufacturer and family behind common caliber prefixes - Rolex, Omega, ETA, Sellita, Seiko and more.
Open toolImport & Tax Calculator
Estimate landed cost, customs duty, and VAT/GST when importing into the US, EU, UK, JP, AE, and more.
Open toolStrap Sizing
Recommend strap length and spring-bar width for two-piece, NATO/G10, and rubber constructions.
Open tool