A VICTORIAN ROSEWOOD TWO-DAY MARINE CHRONOMETER Parkinson & Frodsham No. 3509 The silvered dial signed and numbered Parkinson & Frodsham, Change Alley, London, 3509 , Roman hour numerals, subsidiary seconds and up-and-down dials, blued steel hands, Earnshaw escapement, cut bimetallic Pennington format balance with peripheral screws, blued steel helical balance spring, repaired (replacement) spring foot detent with steel locking pallet, brass bowl and gimbal in brass bound three-tier rosewood box, the middle section with inset bone disc inscribed Parkinson & Frodsham, London , the bottom section with inset bone disc inscribed 3509, external brass drop handles 95 mm. (dial diam.); Box 165 x 165 x 180 mm.
A VICTORIAN ROSEWOOD TWO-DAY MARINE CHRONOMETER Parkinson & Frodsham No. 3509 The silvered dial signed and numbered Parkinson & Frodsham, Change Alley, London, 3509 , Roman hour numerals, subsidiary seconds and up-and-down dials, blued steel hands, Earnshaw escapement, cut bimetallic Pennington format balance with peripheral screws, blued steel helical balance spring, repaired (replacement) spring foot detent with steel locking pallet, brass bowl and gimbal in brass bound three-tier rosewood box, the middle section with inset bone disc inscribed Parkinson & Frodsham, London , the bottom section with inset bone disc inscribed 3509, external brass drop handles 95 mm. (dial diam.); Box 165 x 165 x 180 mm.
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