i believe that the tiffany the seller is referring to is the former teenage mall singer, madonna wannabe and one-hit wonder tiffany. the "& co." must be a reference to her mother, who managed her lackluster career.
But even if this was a gun made in the '80's or '90's of the last century I doubt it very much that the artist would even take the Serpentine C in consideration on those grips. Even as a customjob, this is no where near the true style of the early Tiffany grips, nor the style of those artists that keep the tiffany tradition alive.
Presentation Colt Model 1862 Police and Pocket Revolver
Colt Industries and Louis Nimschke (b. 1832, d. April 9, 1904)
The Colt Model 1862 Police and Pocket Revolver was made from ca. 1873 - 1875 and so had a very limited number manufactured. The Colt Model 1862 Police and Pocket Revolver can be identified by the distinct barrel-lug contour, the ejector rod, and the presence of the leftover percussion-loading cutout in the low section of the barrel lug.
The importance of this revolver is enhanced by the fact that it is a deluxe presentation piece decorated by the master craftsman Louis Nimschke. Original examples of "Tiffany" grips such as this are considered scarce, especially so those with documented provenance.
The revolver was presented to Frontier Indian Scout Captain Cyrus McKneeley Scott in recognition of his distinguished service and bravery while serving in the Kansas Cavalry Patrol.
Colt, one of a pair of Single-Action Army Revolvers
Colt Industries, Leonard Francolini, and Tiffany & Co.
In the 1860s Tiffany & Co. served as firearms agents for Colt and Henry Deringer. From the 1890s through circa 1916 firearms manufactured by Winchester, Smith & Wesson, and Colt were exquisitely decorated by Tiffany & Co. In 1985 Tiffany & Co. returned to firearms decoration, though on an extremely exclusive basis, with the commission of a pair of revolvers-of which this is one-by George A. Strichman. So exceptional was the commission that it is credited with re-starting Tiffany & Co.'s firearms decoration practice.
This is one of a set of exceptional gold and silver-inlaid Colt Single-Action Army revolvers that combined the talents of Tiffany & Co. and a leading American master engraver. The gold and silver inlaying and engraving were executed by Leonard Francolini, and the silver and design were provided by Tiffany & Co.'s superb designers Paul Epifanio and Larry Wojick. The design features numerous unique elements, including: rampant gold seahorses, a variation of the famous Colt logo, shell motifs, and silver-inlaid dolphins. The grips are of cast-and-chased sterling silver and vermeil depicting George A. Strichman's yacht, the Peacemaker. A third revolver of the set was featured in Christie's benefit auction in 1985 and is in the arms and armor collection of the Metropolitan Museum of Art.
Master engraver Leonard Francolini's work has been published in specialized books and journals. Mr. Francolini worked for the Colt Custom Shop from 1972 to 1980. Since 1980 he has worked as a freelance master engraver.
Colt, pair of Single-Action Army Revolvers
Colt Industries, Alvin A. White, and Tiffany and Co.
American, late 20th century
A masterpiece of exhaustive detail and meticulous craftsmanship, this matched pair of Colt Single-Action Army revolvers was decorated on order of George Strichman by Alvin A. White. The design was created and executed by White, while the cast grips, based on "Tiffany" grips of the later 19th century, were designed by Joel Meinsner & Co. The decoration includes motifs based on Western art, including portraits of Annie Oakley and Buffalo Bill Cody derived from period photographs. The remaining motifs were based on art by George Catlin, Albert Bierstadt, Frederic Remington, and others.