Each lock plate is signed "JOSEPH EGG." A matching, well executed floral scroll engraved motif is featured on the lock plates, fish engraved hammers, barrel tang, barrel plugs and silver D-shaped trigger guard and grip cap. The top barrel is signed "JOSEPH EGG. LONDON," and the lower barrel is signed in script "No. 1 Piccadilly," the gunmaker's London address. The Egg designed action allows each barrel to fire in succession with two pulls of the trigger. Silver hallmarks are found on the trigger guard. The checkered grip has a blank thumb escutcheon, the number "726" stamped near the single trigger on the left side and a large blank gold pommel cap. The partitioned mahogany case is lined in red wine velvet and contains two extra hammers, small silver powder flask, silver ramrod, silver cleaning rod with interchangeable heads, bullet mold, wooden percussion cap container and bone container holding two extra percussion nipples. London gunmaker Joseph Egg (1775-1837) is generally acknowledged to have invented the percussion cap. Pocket sized pistols, like this example, were one of Eggs specialties, and his elegant small sized pistols were commissioned by royalty. Examples of his work reside in some of today's most prestigious museums.