STROM, ARMINSkeletonized perpetual calendar, one of a kind. Origin: Switzerland, Biel. Clockwork: Automatic movement. Case/Wristband: 750/- yellow gold, original leather watchband, skeletonized movement. Total Weight: ca. 48,5 g. Measurement: Ø ca. 36 mm, length ca. 22 cm. Description: Moon phase at 6 o'clock, month at 3 o'clock, day indicator at 9 o'clock, retrograde date display.Automatic movement with ca. 48 hour power reserve, yellow gold case with sapphire glass and sapphire glass case back.Maintenance certificate from 08/2022 about a restoration by the Armin Strom AG and box enclosed.Leather bands made of materials taken from protected species can not be shipped abroad. In these cases the band will be removed before shipping.