The immediately preceding Arnold pocket chronometer to this one, No.145, has the same signatures on both the dial and movement. The updating of the temperature compensation accounts for the modified signature on both No. 145 and No.146.
For an illustration of the John Roger Arnold No.145 with the same signature, as well as information on the transfer of the business between father and son, see Hans Staeger, “100 Years Of Precision Timekeepers,” pp. 170, 189 and figs. 1-3. Staeger writes that, ‘according to an existing record written by John Roger Arnold and sent to Breguet in Paris 1796, that his father John Arnold, had transferred the running of the business to his son John Roger Arnold. However, according to existing documents, the transfer took place on the 10th May 1799.’ During this three-year period between the letter to Breguet and the transfer of the business, dials of marine chronometers and pocket watches have been found with the ‘conjoined’ J.A.R initials.
With thanks to Rory McEvoy and Jonathan Betts for their help with this footnote.
Please call 1-800-555-5555 to order a print catalog for this sale.