Piaget caliber 838D

Manufacture Piaget 838D ultra-thin hand-wound gem-set skeleton mechanical movement in white gold with small seconds. Type: Hand-wound mechanical Material: White gold, Diamonds Shape: Round Functions: Small seconds at 10 o'clock, Hours, Minutes Technical features: Balance with screws Power reserve (in hours): Approx. 61 Frequency (vph): 21,600 Frequency (Hz): 3 Diameter (lines): 12.00 Diameter (mm): 26.8 Number of jewels: 19 Thickness (mm): 3.1 Number of components: 131 Finishing: Mainplate circular-grained, drawn and bevelled by hand, Bridges circular-grained, drawn and bevelled by hand, 2 ct, Guilloché sunburst motif