Gronefeld

Gronefeld has 6 watches in the database across 3 model families. Lug-to-lug runs from 46.6 mm to 53 mm, with a median of 46.9 mm, alongside case diameters of 39.5 mm to 44.5 mm.

83% of them sit in the balanced range on a 6.5-inch wrist.

The most documented family is 1941 Principia (4).