Master's mark "MK", presumably Augsburg, 56 mm, 161 g, circa 1580

A rare, one-handed pre-balance Renaissance watch with hour self strike
Case: bronze, lavishly engraved, ornamented and pierced, firegilt, front lid with 12 apertures for hour numerals. Dial: brass, engraved, radial Roman numerals, blued hand. Movm.: full plate brass movement, firegilt, iron going and striking train, 2 barrels for hour self strike and going train, verge escapement, locking plate with internal teeth, 1 hammer, bell, stackfreed, foliot.

Numerous other high quality watches with Master's mark "MK" are mentioned in: "Meister der Uhrmacherkunst" by Juergen Abeler, 2nd edition, Wuppertal 2010, p. 644.