The numbering found on small pocket pistols are nomally "1 " and "2" as they where normally ordered in pairs. Addtional numbering is seldom seen on pocket pistols, particularly if they are part of a gift of luxury weapons to dignitaries.

The elegant pair in the box with gilded decor below is therefore a rarity. 

This pair of pistols are dated to around 1810 and the number "4" is rather low. The numbering isn't chronological, and therefore can not be what today are serial numbers. 

     Some data on the pistols: A FRENCH EMPIRE CASED PAIR OF DE LUXE FLINTLOCK POCKET PISTOLS BY BOUTET ET FILS À VERSAILLES, CIRCA 1810 DIMENSIONS OF THE CASE: HEIGHT: 11 X LENGTH: 17.5 X DEPTH: 9.5 CM / 4.3 X 7 X 3.7 IN LENGTH OF EACH PISTOL: 15.5 cm / 6.1 inc

Engraved throughout with Empire designs of Neo-classical laurel branches, flower heads and related small motifs to the exceptional standard characteristic of this maker. With turn-off short barrels with engraved muzzles, engraved box-lock actions each signed BOUTET ET FILS in capitals on the left, involving a larger decorated cursive letter B and inscribed A VERSAILLES on the right, fitted with sliding safety-catches and engraved folding triggers, the latter delicately concealed within the designs engraved on the underside of the actions, and with ebony butts cut with panels of fine chequering: in their original case contour-fitted for the rare seating of the pistols in a side-by-side standing position, lined in dark green baize, covered with burgundy morocco leather with tooled and gilt borders both inside and out, and the lid with the owner’s gilt-stamped monogram DM. Retaining its original full complement of accessories, comprising combined bullet mould, sprue-cutter and barrel wrench, three-position turnscrew, and pricker. The entire set preserved in fine untouched condition through.