Rolex [Caliber 740] - Mainspring Barrel Complete with Mainspring and Automatic Winding Wheels - 4003

The base item Rolex [Caliber 740] - Mainspring Barrel Complete with Mainspring and Automatic Winding Wheels - 4003 carries the parts list number 4003 specifically for spare parts search for caliber 740.

The special parts list for caliber 740 explicitly refers for general parts to the tables for calibers 720–730. The technical reference image serves for comprehensible identification during overhaul, repair, and spare parts search.

For verification, caliber 740, part number 4003, and the designation mainspring barrel complete with mainspring and automatic winding wheels are checked together.

Later variants show the available original part, the documented condition, and the actual delivery scope.