Great looking vintage Hamilton mechanical. Picked up at an estate sale. Wound it up and it’s kept time great for the last five hours. May need adjusted for speed for a full 24 hour period, but after five hours, I couldn’t really see any lag or that it was running fast.

*** the "mark" next to the H is INSIDE the crystal and it's a piece of something that moves around - dust maybe?  I didn't want to open the case to clean it out myself.***

Marked 10 karat gold field as well as the stretch band.

Appears to be a retirement watch from 1956.

Some overall where, please see all pictures for details!