A Jno Jackson silver windmill verge pair cased watch, the full plate movement with engraved and pierced balance cock, fusee and chain, turned pillars, worm and wheel barrel set between the plates, silver regulator disc. Movement signed 'Jno Jackson, Boston'. The polychrome dial depicting a fisherman in a windmill landscape with Arabic numerals. The plain silver inner case and outer case hallmarked London 1791. Provenance: Christie's 1980