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AN ENGLISH TWO-DAY MARINE CHRONOMETER
THE SILVERED DIAL SIGNED THOMAS PORTHOUSE MAKER TO THE ADMIRALTY 10 NORTHAMPTON SQR. LONDON AND NUMBERED 6434, ROMAN NUMERALS, SUBSIDIARY UP-AND-DOWN AND SECONDS DIALS, GILT HOUR, MINUTE AND UP-AND-DOWN HANDS, BLUED SECONDS HAND (LATER HOUR AND UP-AND-DOWN HANDS), EARNSHAW SPRING DETENT (REPAIRED), CUT BIMETALLIC COMPENSATED BALANCE WITH SEGMENTAL HEAT COMPENSATION WEIGHTS, SPOTTED TOP PLATE, SECOND QUARTER 19TH CENTURY
85MM. DIAMETER DIAL
THE SILVERED DIAL SIGNED THOMAS PORTHOUSE MAKER TO THE ADMIRALTY 10 NORTHAMPTON SQR. LONDON AND NUMBERED 6434, ROMAN NUMERALS, SUBSIDIARY UP-AND-DOWN AND SECONDS DIALS, GILT HOUR, MINUTE AND UP-AND-DOWN HANDS, BLUED SECONDS HAND (LATER HOUR AND UP-AND-DOWN HANDS), EARNSHAW SPRING DETENT (REPAIRED), CUT BIMETALLIC COMPENSATED BALANCE WITH SEGMENTAL HEAT COMPENSATION WEIGHTS, SPOTTED TOP PLATE, SECOND QUARTER 19TH CENTURY
85MM. DIAMETER DIAL