What is the number 381 on the back of my watch mean. Created by . Watches - Rolex - Oyster Perpetual Submariner Date Wrist Watch

What is the number 381 on the back of my watch mean

March 2021 1 18 Report

What is the number 381 on the back of my watch mean

Watches - Rolex - Oyster Perpetual Submariner Date Wrist Watch

For Casio watches, the number on the back is the module number. For ROLEX I have no idea. Never saw one in my life.