细节
A HAMILTON MODEL 21 TWO-DAY MARINE CHRONOMETER
Hamilton Lancaster P.A., U.S.A.
the silvered dial signed and numbered Hamilton Lancaster P.A., U.S.A. N8854 1941, Arabic hour numerals, subsidiary seconds and up-and-down (state-of-wind) dials, block hands, nickel plated frames with parallel line spotting, top-plate inscribed Model 21, 14 jewels Hamilton Watch Co. Lancaster. Penn, the pillar-plate numbered 2E 8854, Earnshaw escapement, Hamilton spring detent assembly with jewelled locking stone, uncut stainless steel balance with invar cross-arm, Elinvar-Extra helical balance spring, Hamilton 'U' form balance brake above balance rim, brass bowl, later gimbal, later brass-bound three-tier mahogany box with external drop brass handles
107mm. dial. diam.
Hamilton Lancaster P.A., U.S.A.
the silvered dial signed and numbered Hamilton Lancaster P.A., U.S.A. N8854 1941, Arabic hour numerals, subsidiary seconds and up-and-down (state-of-wind) dials, block hands, nickel plated frames with parallel line spotting, top-plate inscribed Model 21, 14 jewels Hamilton Watch Co. Lancaster. Penn, the pillar-plate numbered 2E 8854, Earnshaw escapement, Hamilton spring detent assembly with jewelled locking stone, uncut stainless steel balance with invar cross-arm, Elinvar-Extra helical balance spring, Hamilton 'U' form balance brake above balance rim, brass bowl, later gimbal, later brass-bound three-tier mahogany box with external drop brass handles
107mm. dial. diam.