Important Collectors Wristwatches, P...
Geneva, Nov 16, 2008
Six-Minute Tourbillon A. G. Randall, Birmingham, No. 11.Made in 1981 froman ebauche, with dial by JosephWhite & Son, Coventry, London, Makers to the Admiralty, the case with London hallmarks for 1980. Very fine and unique, 18K yellow gold, keyless pocket lever chronometer with six minute tourbillon regulator.
C. Three-body, heavy, "bassine et filets", polished, mastermark MRM (Mathews). Glazed gold-rimmed cover to view the movement. D. White enamel with radial Roman numerals, outer minute track and subsidiary seconds. Blued steel pear hands. M. 20"', frosted and gilt, half-plate, 20 jewels in screwed gold chatons, going barrel, lateral lever escapement, including the fourth wheel to reduce the speed of rotation from the more conventional one-minute period, two-arm bimetallic compensation balance with gold temperature and meantime adjustment screws, free-sprung blued steel balance spring with terminal curve, the end pinned to a steel stud screwed to the cock, six minute tourbillon regulator with Randall gilt brass carriage, diamond endstone. Dial signed by Joseph White & Son, movement signed by A.G. Randall. Diam. 58 mm.
Grading System | |
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Grade: |
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Case: 2 |
Very good |
Movement: 2 |
Very good |
Dial: 2-01 |
Very good HANDS Original |