Gruen Airflight II cal NS510SS
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Gruen Airflight II cal NS510SS
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Gruen Airflight II watch with jumping hour feature in which the numerals change automatically at ca. 01:00 to display the 24 hour time style, as shown in pictures here. The cal N510SS movement is protected with a secondary inner back, as shown to offer greater dust and anti magnetic protection.
The watch is fitted with a NOS Gruen signed vintage leather strap. The case and case back are in superb condition, but there is a very small scratch on the dial, as shown.
The watch measures ø 35mm x 10mm D. Date of production 1960-1965.