Lot Content

Global notice COVID-19 Important notice
Gruen. A Fine Platinum Pentagonal Openface Keyless Anniversary Pocket Watch
This lot is offered without reserve.
Gruen. A Fine Platinum Pentagonal Openface Keyless Anniversary Pocket Watch

SIGNED GRUEN, FIFTIETH ANNIVERSARY, NO. 531, CIRCA 1924

Details
Gruen. A Fine Platinum Pentagonal Openface Keyless Anniversary Pocket Watch
Signed Gruen, Fiftieth Anniversary, No. 531, Circa 1924
12k gold Extra Precision lever movement, bridges engraved overall with foliate scrolls, 21 jewels and 2 diamonds, bi-metallic compensation balance, precision regulator, silvered dial, applied Arabic numerals, engine-turned subsidiary seconds, pentagonal-shaped case, black enamel geometric motif to the bezel, back rim and bow, engraved band, engraved snap on back, dial and movement signed
46mm at widest point
Special Notice

This lot is offered without reserve.

Condition Report

If you wish to view the condition report of this lot, please sign in to your account.

Sign in
View condition report

Lot Essay

D. Gruen & Son was founded in 1894 by Dietrich Gruen and his son, Fred, after the previous company he founded, Columbus Watch Manufacturing Company in Columbus, Ohio, went bankrupt. Dietrich is known for a patent he took out for a safety pinion (U.S. patent no 157'913) for pocket watches. The pinion prevented damage to the movement if the mainspring broke.
When Dietrich's other son, George, joined the company, it was renamed D. Gruen Sons & Company. Gruen focused his business on importing movements from Switzerland and casing them up to be sold. In 1904 Gruen rearranged pieces of the pocket watch movement to make it a third thinner than most others and still meet railroad requirements.
In 1924 in honor of the 50th Anniversary of Gruen's patent for an improved movement piece, the company released a pocket watch with a movement made of pure gold. 600 of these pieces were produced-one for each month of the 50 years. The quality of these pocket watches was impressive, elevating Gruen's reputation.

More from Important Watches

View All
View All