Lot Essay
The balance three cross-arm assembly bears a resemblance to the Frodsham/Hartnup balance of the 1850s. The chronometer is circa 1860.
Details
A 56-HOUR MARINE CHRONOMETER
Tiede Berlin, No. 352
the silvered dial signed and numbered TIEDE BERLIEN 352, Roman hour numerals, subsidiary seconds and up-and-down dials, blue steel hands, reversed fusee top plate inscribed Tiede. Berlin, 20 Jager Str. 352, Earnshaw escapement, cut bimetallic balance with three interlocked parallel bimetallic cross arms with steel above and brass below, blued steel helical balance spring, spring dovetail detent to side of banking block, jewelled locking stone, brass bowl resting in turned recess within squat three-tier plain mahogany box with turned viewing port in top of centre section
80mm. dial diam., 170mm. sq. box, 110mm. high
Tiede Berlin, No. 352
the silvered dial signed and numbered TIEDE BERLIEN 352, Roman hour numerals, subsidiary seconds and up-and-down dials, blue steel hands, reversed fusee top plate inscribed Tiede. Berlin, 20 Jager Str. 352, Earnshaw escapement, cut bimetallic balance with three interlocked parallel bimetallic cross arms with steel above and brass below, blued steel helical balance spring, spring dovetail detent to side of banking block, jewelled locking stone, brass bowl resting in turned recess within squat three-tier plain mahogany box with turned viewing port in top of centre section
80mm. dial diam., 170mm. sq. box, 110mm. high