A killer and extremely hard to come by 1930s Alpina-Gruen Jump Hour “Doctors Watch” in solid 18K yellow gold, featuring dual stacked scientific minutes and running seconds registers and contoured date aperture at its top, powered by a legendary Gruen signed Aegler based caliber 350, which also powered Rolex Jump Hour watches of this era.
A killer and extremely hard to come by 1930s Alpina-Gruen Jump Hour “Doctors Watch” in solid 18K yellow gold, featuring dual stacked scientific minutes and running seconds registers and contoured date aperture at its top, powered by a legendary Gruen signed Aegler based caliber 350, which also powered Rolex Jump Hour watches of this era.
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