John Arnold — historical London watchmaking business

John Arnold is not the same entity as today’s Arnold & Son

The input resolves to John Arnold’s historical London watchmaking business, not to the modern Swiss brand Arnold & Son. John Arnold and his son John Roger traded as John Arnold and Son at 102 Cornhill from 1783; the authority qualifies the end date as 1796?.

Today’s Arnold & Son describes a Swiss watchmaking identity with English roots. That heritage positioning alone does not establish continuous legal identity with Arnold’s London firm. 123

Who actually made an Arnold chronometer

RMG identifies Thomas Prest as Arnold’s principal finisher and Well Hall foreman; a signed fusee supports workshop collaboration rather than sole-hand manufacture. RMG dates ZAA0007 to 1793 and considers its original manufacture almost certainly Arnold’s; possible resale through Hind remains qualified. 6

People, production and attribution

The museum authority dates Arnold’s first London shop, in Devereux Court off the Strand, to 1762. The authority subsequently places the business in St James’s Street in 1769 and at 2 Adam Street, Adelphi, in 1771.

John Roger Arnold succeeded his father in the business; the catalogue does not establish the later full corporate succession chain. The Science Museum catalogues marine chronometer No. 1, signed John Arnold, London, at approximately 1771, with a spring-detent escapement. 14

Continuity and the record today

RMG describes pocket chronometer 1/36, ZBA1227, as by John Arnold; its gold case carries a London 1778 hallmark. ZBA1227’s description names John Arnold, but its structured creator field names John Roger Arnold; this internal catalogue inconsistency is retained. 5