A rare going barrel cylinder movement by J. R Arnold, Patent No.92 Ex: Charles Allix & Assoc. Catalogue. 1993/94, Arnold, John Rodger, London, c.1825, with Priest's patent keyless winding, original signed and numbered enamel dial, faint hairline crack. 49 mm. £350. Provenance: The private collection of a master watchmaker, purchased from UK dealer for its technical interest.