Vintage Gruen Day/Night Jump Hour Men's Mechanical Wristwatch N 510 CA Serviced

Product Description

 

• Item: Wristwatch

• Brand: Gruen

• Model: Day/Night Jump Hour

• Movement: Mechanical

• Case Material: Steel

• Country: Swiss

• Gender: Men's

• Caliber: N 510 CA

• Size: 34mm

 

 

Product Measurements

 

• Diameter: 34mm
• Lug Width: 18mm
• Lug to Lug: 42mm

• Thickness: 10 mm

 

 

Product Condition

Fair Gruen Precision Day/Night Jumphour that has been recently serviced. Case has scratches with moderate wear all throughout. Dial is clean, Day and night function works well.
 

• Overall Condition: Fair, overall condition for its age.

• Functions: Running and has been serviced. Gaining 40 seconds a day with a 240 amplitude and a .3ms beat error.

• Case: There are scratches on the case.

• Dial: The dial is in good condition.

• Hands: There is discoloration on the hands.

• Band: The band is not original.

About the brand: Founded in Ohio - Gruen was one of the largest American watch manufacturers for the greater part of the 20th century. In fact, shortly after their relocation to Cincinnati, Gruen became the number one selling watch brand in the US. Like many brands - their factory in Time Hill ceased production of wristwatches and produced contracted military watches for the US Military in WW2. After the war, the flood of Swiss import watches had a disastrous effect on Gruen, and the brand ultimately closed its doors in 1977. Today, their wonderful line of vintage watches such as the Airflight, and Curvex models are all that remains of this once great brand.