1930s Mido “Direct Time” Jump Hour "Tetsukamen"

This is a rare 1930's Mido "Direct Time" jump hour model, also known as the "Iron Mask". It is a jump hour model that uses a digital disk, and the hour disk changes the moment the minute disk has elapsed one minute. It is a popular and rare model that is also called "Iron Mask" in Japan because of its unique look where hours, minutes, and seconds are displayed independently of each other. It is a precious gem with unparalleled originality and a wonderful design unique to this era.