Case diameter

23 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 65 references with a sourced case diameter of 23.0 to 23.99 mm, spread across 10 brands and 26 families. Sourced case diameters run from 23 mm to 23.9 mm. By movement type: 7 quartz, 2 manual, and 1 solar. The most common sourced case material is stainless steel (20 of 35).