Case diameter

17 mm watches

On the small side by modern standards; sizes like this were the norm for mid-century watches. Lug-to-lug length and case thickness matter as much as diameter for how a watch fits.

Watchfari lists 18 references with a sourced case diameter of 17.0 to 17.99 mm, spread across 3 brands and 8 families. Sourced case diameters run from 17 mm to 17.5 mm. All sourced cases are stainless steel.