The Bestfit 111 & 111A guides — the trade-standard reference watchmakers use to identify vintage watch parts and cross-check interchangeability between movements.
⭐ At a glance
📦 Two volumes included: guide 111 and guide 111A
✅ Choice of format: paper copies (as photographed) or a PDF file copy on a USB memory stick
✔️ Both volumes supplied together — paper copy comes as two separate catalogues, USB stick version has both volumes on the one file
Specifications
- Model: 111 & 111A
- 🔧 What it does & how to use
The Bestfit catalogues are an industry-standard reference for ordering watch parts and checking interchangeability across vintage calibres. They're an essential resource for any semi-serious watch repairer working on older movements, giving exploded diagrams of movements alongside parts identification drawings showing both the factory part number and the corresponding Bestfit number.
- Identify the movement: locate your calibre in the guide to bring up its exploded diagram.
- Find the part: use the diagram to pinpoint the component you need and read off its position number.
- Cross-reference numbers: match the factory part number against the Bestfit number for ordering.
- Check interchangeability: use the interchangeability listings to find compatible parts from other movements when an exact original isn't available.
⚠️ Please check which format you'd like before ordering — paper copies (two separate catalogues) or a PDF copy on USB memory stick (both volumes in one file) — as the seller asks buyers to choose.
