36,800 CHF
John Sutherland, 38, Cranmer Road Forest Gate, London, No. 5162 with London hallmarks for 1904. Extremely fine 18K gold, keyless pocket chronometer with one minute tourbillon regulator, awarded a Class A Certificate by the National Physical Laboratory, Teddington, Middlesex, was credited as Especially Good in 1914, with a total of 86.9 marks, passing with superior merit, with original Certificate. Double body, massive, "pomme et filets " , polished, by Frederick Thorns (Master Mark). White enamel by Willis, with Roman numerals and sunk subsidiary seconds. Blued steel "pear" hands. Notes Extract from the results of trial Rated hone March 2 to April 15 1914 The mean daily rate, in pendant up position: - 1.1" The mean daily rate, in right position: - 0.6" The mean daily rate, in left position: - 0.1 " The mean daily rate, in dial up position: - 1.4" The mean daily rate, in dial clown position: - 0.7 " Mean variation of daily rate: +/ - 0.28 " Mean change of daily rate for I " Faht.: +/ - 0.07 " Difference between the extreme: 5.2 " Number of the above marks awarded In respect of variation of daily rate: 34.3 In respect of change of position: 37.4 In respect of temperature compensation: 15.2 Total: 86.9 This watch was prepared and then submitted to the N.P.L. by John Francis Cole of Usher & Cole, presumably on behalf of the owner, some ten years alter it was made. J.F. Cole and Sons is not the correct name style of the business and was no doubt an understandahl Read more…
Auctioneer:
Antiquorum
Date:
1997-04-12
