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Early Keyless Watch, ca. 1850
Manufacturer: unknown (No brand, no Hallmark).

Dimensions:

Watch diameter
.....51.8 mm
Movement, Dia
......45.2 mm
Thickness
..............17.5 mm
Weight
...............118 g

Indications: Hours, Minutes

Fig. 2 Fig. 3
Notice: The setting of the hands by push piece and seesaw. Maltese cross at the barrel, Fig. 3. It's purpose is limiting he number of windings of the main spring.

Movement no#: Plates and wheels from gilded brass. 17 rubies. Clubtooth strait anchor with hidden lever-jewels and a single roller balance. Balance with faked temperature compensation, and flat, blued hairspring. Remarkable wolf teeth winding gear. Time setting by push piece.

Dial: Enamel dial, originally fixed on the top plate by two feet and lateral screws. Later the feet were cut off and the dial fixed by two screws drilled through the face in positions three and nine. Roman numerals. Cathedral hands from blued steel.

Case # 50666 : Case with hinged bezel, dust cap and back cover. Casemaker <JS>. Case from argentan. The gold filling is badly worn. The case shows traces of long use.

Comments: This watch is a good example of a very early keyless wound watch. The makeshift design of the case and movement clearly prove their key winding kinship. The barrel core and minute cannon still are equipped with pinion squares for winding and setting by a key though not used in this case. The typical ball shaped pendant of the case is identical to a key wound watch. Here a hole was drilled through the pendant to insert a winding pinion. The winding crown consists of a flat, practical, rifled disc, typical for early keyless watches.