View all items from JULY REMARKABLE FINDS sale

Tiffany & Co. 18K and Diamond HH Treadwell 22nd Regt. N.Y. National Guard Medal

Item Details

Brand/Designer: Tiffany & Co.
Style: Vintage
Materials: 18K Gold
Brooch Closure Type: C-Clasp
Hallmarks: Tiffany & Co. 18K, Personalization
Total Weight (grams): 50.50
Additional Information: Personalized inscription on reverse addressed to Lieutenant Colonel Harry Hayden Treadwell (1856 – 1929). Treadwell served in the 22nd Regiment (NGSNY), Aide-De-Camp to Theodore Roosevelt (as governor), and later as Secretary and Ass’t Treasurer of Tiffany & Co. The medal is accompanied by an original presentation case.
Primary Stone(s) Type: Diamond
Primary Stone(s) Shape: Old European Cut
Primary Stone(s) Dimensions: 2.00 mm
Total Primary Stone(s) Carat Weight: 0.45 ctw
Primary Stone(s) Color Grade: F – G
Primary Stone(s) Clarity Grade: VS1 – VS2
  • This item has been evaluated and verified by a GIA Graduate Gemologist.
  • All diamond and gemstone grading is done under GIA standards as the mounting permits, where gemstones are present; where mountings impede accurate measurements, (estimated) dimensions are provided. All weights and measurements are estimated and approximate. Treatments for jadeite and other gemstones are assumed unless otherwise noted.
  • Pre-owned jewelry may contain minor markings/imperfections throughout.
  • While we represent items accurately on our site to the best of our ability, the color calibration of computer monitors can vary, causing colors to appear slightly different from one monitor to another. Due to this, please note that precise color representation of metal and gemstones is not always possible.


- the diamonds have chips and abrasions.
- scratches to the metal.

Item #


Terms & Conditions

Have a similar piece to sell? Get in touch with one of our experts.

Request A Consultation
Other Items You Might Like

Full-service selling solutions for home or business-minded consignors.

Learn More