How do I wind a manual watch?

Turn the crown clockwise between your thumb and forefinger until you feel gentle resistance. Stop immediately to avoid damaging the mainspring. Most mechanical pieces require a daily wind to maintain accurate time throughout the day.

Are these watches waterproof?

Vintage pieces from this era generally lack modern rubber gaskets and waterproof sealing technology. Moisture can easily compromise the delicate steel gears and dials inside. It is best to keep them entirely away from water, rain, and heavy humidity.

What is a bumper movement?

A bumper movement uses a semi-circular oscillating weight that swings back and forth rather than spinning 360 degrees. You can feel a gentle tap against the springs inside as you move your arm. This design represents an early stepping stone in automatic watch development.

How do I read a calendar watch?

Calendar displays on these vintage pieces indicate the date through windows on the dial or via an extra pointer hand. Certain models also track the day of the week and the month. Adjustments should be made carefully using recessed pushers or by advancing the hands past midnight.