2435th COMMIT Column - Dr. Ito's Thorough Dissection of Mechanical Watches! Vol. 56: What is the "Cal. 4030," the Daytona's Last Third-Party Base Movement?

Hello!

This is Kaneko from Commit Ginza!

Today, I'd like to introduce Dr. Ito's "Thorough Dissection of Mechanical Watches!! Vol. 56"!!

It provides information that is not widely known, such as explanations of movements, instructions on how to use complicated watches, and information on daily maintenance, as well as a variety of other information!

It's a very informative column, so please enjoy it!!

COMMIT Column ~What is "Cal.4030", Daytona's last third-party base movement?