Ventura

Case geometry, not dial printing, is the primary check

The Arbib case has compound curves and a specific relationship between the two shield points and the lug line. Reproductions and re-cased watches get the proportion wrong more readily than they get the dial wrong, because a dial is a printing problem and this case is a tooling problem. Compare the point-to-point geometry and the depth of the dish, not the logo.

Gold-filled cases wear through at the shield points

The most exposed edges of the case wear first and the base metal shows as a pink or grey line. On a gold-filled Ventura this is ordinary honest wear. What it also means is that a gold-filled example with sharp, unworn, uniformly bright points has either been re-plated or is not what it claims — check the case markings for the metal designation and see whether the wear pattern is consistent with them.

Refinished dials are the norm on surviving examples

Sixty-year-old Ventura dials are frequently refinished, and a refinished dial is not a counterfeit — it is a restoration that costs originality. Signs are printing that sits on top of the surface rather than in it, markers set slightly off their original positions, and a Hamilton signature whose letterforms do not match period printing. Record it as a refinished dial with the value consequence, not as a fake watch.

A 505 inside an early Ventura is usually a factory service replacement

The caliber 500 had chronic problems with its contact system and Hamilton replaced large numbers under service with the revised 505. Finding a 505 in a watch whose case dates to the 500 period is therefore the EXPECTED outcome for a watch that was actually used, and should be classified as a manufacturer service replacement rather than as an incorrect movement. A surviving, working, original 500 is the rarer and more valuable configuration precisely because so many were replaced.