Details
Herbert Blockley & Co., London No.31629: An early silver waterproof free-sprung deckwatch with up-and-down indication and signed mahogany box
Case: Plain silver case with screwed bezel and back, screwed waterproof cover to the winder with a length of chain
Dial: Signed and numbered with Roman numerals, subsidiary seconds, up-and-down indicator
Movement: Signed and numbered, 3/4-plate, fusee, screwed chatons, free-sprung bi-metallic balance with flat blued steel hairspring and end-curves, diamond end-stone, English lever escapement
With signed and numbered 3-tier observation box
56mm.diam.
Case: Plain silver case with screwed bezel and back, screwed waterproof cover to the winder with a length of chain
Dial: Signed and numbered with Roman numerals, subsidiary seconds, up-and-down indicator
Movement: Signed and numbered, 3/4-plate, fusee, screwed chatons, free-sprung bi-metallic balance with flat blued steel hairspring and end-curves, diamond end-stone, English lever escapement
With signed and numbered 3-tier observation box
56mm.diam.