Hamilton 992, 16/0, 21 Jewels
Impuesto incluido. (0 SEK)
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Serial number: 1 641 434 (apox: 1919).
Open face caliber. Railroad approved.
3/4 nickel plates, 21 extra fine rubys in gold settings, double roller escapement, gold center wheel, Breguet hairspring, compensating balance with gold screws, gilt lettering, chamfered steel parts, adjusted to temperature, isochronoism and 5 positions.
Technical data: Hamilton Grade 992 (1903 - 1930).
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21 Jewels, stem wind, lever set, sub second. -
Size: 16S 43.18 mm. -
H: = 7.25 mm. -
N: = 18.000 A/h. -
Power reserve: 52 h. -
Mainspring:
Versions:
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992: 1903 - 1930 -
992E: 1931 - 1940, elinvar hairspring -
992B: 1940 - 1969, different plate design, monometallic Aurium balance.
