This is an original early Colt Bullet Mold with the scarce brass body and handles. As early Colt Bullet Molds don't have the sliding iron sprue cutter, the COLT'S PATENT was stamped directly across the top brass halves of the mold below the hinge. According to my friend Robin Rapley's book on Colt Accoutrements 1834-1911, this .31 caliber mold is correct for an early Model 1849 Pocket Revolver. Robin listed this one as type M#17 on page 124 of his book. Just as he mentions in the book, there is a small letter "P" stamped on the top of the right handle.
Robin Rapley: It was a great honor to get the chance to meet him and get to know him over a span of several years. If you ever got the chance to meet Robin, you would never forget his friendly nature, his New Zealand "Kiwi" accent, or his generosity with sharing his incredible knowledge of everything Colt! He was a real gift to the world of antique gun collecting and it is selfless people like him who spend years researching, traveling, writing, and photographing items from all over the world, all to write books to fill in the missing gaps in our history of weaponry regarding one of America's oldest companies. If you don't have a copy, you can usually pick one up on Amazon.com. His book opened up a whole new world to me regarding Colt accoutrements and I promise, it will for you too!
Overall, this mold condition is Very Good with some light dings and scratches, but fairly smooth overall with a nice mellow patina over the brass. Cavities are in Very Good Condition and are for the spherical and belted conical ball. A very unique Colt Revolver accessory that would be perfect for an early 1850's production Model 1849 Pocket "Gold Rush Era" Revolver.