How do I wind a vintage manual watch?

Rotate the crown clockwise between your thumb and forefinger until you feel gentle resistance. Stop immediately to avoid damaging the mainspring. Wind the piece at roughly the same time each day to maintain consistent tension and stable timekeeping performance.

Are these watches waterproof?

Vintage pieces lack modern rubber gaskets and screw-down systems designed to withstand moisture. Even models marketed as water-resistant originally should be kept far away from water. Humidity and condensation can bypass aged seals and damage delicate steel components inside the movement.

What is a bumper automatic movement?

A bumper automatic utilises a weighted rotor that swings through a partial arc rather than completing a full circle. Internal springs cushion the movement as it rebounds against the frame. This transitional technology bridges early manual winding designs and the full 360-degree rotors found in later decades.

How often should a vintage watch be serviced?

Mechanical watches require periodic cleaning and lubrication to prevent friction from wearing down metal pivots. Oils dry out over the course of several years, causing erratic timekeeping. A professional horologist should inspect and service the movement every few years to ensure longevity.