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Dial Width: 30 mm
Dial Height: 30 mm
|Movement: 17 jewels manual-wind
Case: stainless steel
Case Width: 36 mm without crown
Case Height: 42 mm with lugs
Case Thickness: 8 mm
Serial Number on Back: 510
Serial Number on Movement: 510 RSS
Bracelet: stainless steel
Bracelet Length: 5.75 in (measures up to 7.25 in)
This is an authentic Swiss-made GRUEN Airflight Precision Pilot Manual-Wind Watch with switching or jump hour-windows
This watch keeps good time & is in good working condition! Add this to your collection of vintage quality timepieces!
The photos presented below are of the actual item for sale. Kindly study them carefully because what you see is what you will get. We try our best to describe watches as accurately as we can that's why we present them visually & literally. In case we missed a few points, you are welcome to ask questions.
This is a vintage GRUEN Airflight Precision has unique switching or jump hour-windows that change mechanically at midnight/noon, to display 12-hour standard time or 24-hour military time.
The GRUEN Airflight was designed for pilots who need 24-hour reference for flight time. At noon, the windows switch to show a 24-hour time, at midnight the windows switch back to show 12-hour time. This feature is credited to a rotating disk underneath the main dial. The hours are displayed in alternating sphere/diamond-shaped windows.
This watch is in VERY GOOD condition, according to the Timezone Grading System: The watch shows what might be considered normal wear by a careful owner who wore the watch regularly. Scratches are evident, but no nicks or dings. May have replacement parts. Running & keeping good time, though may need minor regulation. A sound, attractive presentation overall. 83-87%
steel case; original silver-electroplated steel
satin white dial or face
gold-filled GRUEN symbol logo, black GRUEN name logo & "PRECISION" at 12 o'clock
black "SWISS" at 6 o'clock
clearly-marked black grid
unique switching or jump hour-windows that change mechanically at midnight/noon, to display 12-hour standard time or 24-hour military time
At noon, the windows switch to show a 24-hour military time, at midnight the windows switch back to show 12-hour standard time. This feature is credited to a rotating disk underneath the main dial. The hours are displayed in alternating sphere/diamond-shaped windows.
stainless steel crown
clear acrylic crystal
new multi-piece stainless steel bracelet
stainless steel clasp
stainless steel case back
reverse side of case back embossed with serial numbers, "GRUEN WATCH CO", "SWITZERLAND" & "STAINLESS STEEL BACK"
Swiss-made GRUEN 17 jewels manual-wind movement with 31 hours of power-reserve or running time
Observe how the jump hour window feature in the GRUEN Precision Airflight switches from military time to standard time... another milestone in horology!