How do I wind a manual wind watch?

You wind the watch by turning the crown clockwise between your thumb and forefinger until you feel a gentle resistance. Stop turning immediately when you feel this resistance to avoid over-winding and damaging the mainspring. It is best to wind the watch at the same time each day, ideally in the morning, to maintain a consistent tension for accurate timekeeping throughout the day.

How can I tell the production decade?

You can often determine the production period by examining the movement calibre number, case style, and any serial numbers engraved inside the case back or on the movement itself. Records link specific calibre families, such as the 30T2 or the 260 series, to particular decades of manufacture. Design cues like dial typography, case dimensions, and logo styles also provide clear indicators, as mid-century models differ visibly from 1940s utility pieces or 1970s modern designs.

Were these watches waterproof?

Most vintage dress watches offered limited resistance to moisture and dust, relying on press-fit case backs and standard crowns. They were not built for submersion or rigorous aquatic activities. Models designated as Seamaster featured improved sealing gaskets and threaded case backs designed to withstand moisture better, though contemporary vintage pieces require updated seals to maintain any water resistance.