When Robert Jupe patented his expanding dining-table mechanism in 1835, he was in partnership with John Johnstone at 67 New Bond Street. The firm was known as Johnstone Jupe & Co., and this is the stamp or engraved signature that appears on tables made between 1835 and 1840. By 1840 Robert Jupe had left the partnership to form his own firm in Welbeck Street, and his name alone usually appear on later tables with this mechanism. John Johnstone formed a new partnership with Jeanes and their combined stamp appears on different sorts of furniture in the early Victorian period. This table is extremely unusual for having the stamp of the later partnership that did not include Jupe himself. This suggests that Johnstone had some claim on the patent.
A satinbirch side cabinet by Johnstone and Jeanes was sold anonymously, in these Rooms, 7 February 1991, lot 146