The Antique Pocket category, in collecting terms, means watches over a century old, roughly anything built before the 1920s, which sits above the looser vintage label covering 20 to 99 years. The earliest pieces run a verge escapement and a chain-driven fusee, where the fusee equalizes mainspring torque to feed the balance more evenly, though the steel pallets working against a softer brass crown wheel wear quickly. These watches are rarely precise, yet with hand-pierced balance cocks and engraved plates they amount to small sculptures. On English silver pair cases, hallmarks like the Lion Passant, the crowned Leopard's Head, the sovereign's-head duty mark and a date letter let you read both age and town.
Real examples span a wide field. English verge fusee watches of 1760 to 1820, signed London names such as Charleson or William Gow and ideally still wearing their dust cover, trade on dealer sites and 1stDibs from about $600 to $13,000, averaging near $3,400. On the American side jewel count signals quality: 7 jewels is low grade, 19 to 21 is high grade. The Hamilton 992B (21 jewels, adjusted to six positions) and the Elgin B.W. Raymond railroad family are the reference points, though the 992B ran from 1940 to 1969 so most are technically vintage. At the top, Patek Philippe Lépine references (703, 972, 894) reach $10,000 to $17,000 at auction, and the Henry Graves Supercomplication sold for around $24 million at Sotheby's in 2014.
When buying, start with the movement: on Swiss watches the serial number that dates the piece lives on the movement, not the case, so signature, serial and hallmark have to be read together. A hunter case protects the dial behind a hinged lid while an open face leaves it bare, and key-wind examples are set with a separate key. A solid gold case alone pushes most antique pocket watches into the $1,000 to $10,000 band, whereas an ordinary base-metal Waltham or Elgin is often a few hundred dollars. A crack-free enamel dial, original hairspring and matching serials lift a watch well above a serviced, redialed example.
There are a few sub-paths inside the category. For pure beauty and history go verge fusee; for accuracy and ruggedness go American railroad-grade; for craftsmanship and investment look to Patek, Vacheron or IWC Lépine and repeater pieces. Watches with a full hunter case or a minute repeater generally reward you in the $1,000 to $5,000 band. For a first buyer, a clean, serviced B.W. Raymond or a plain Lépine is an honest entry that suits both a modest budget and daily pocket carry.