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More properly described as a fine Georgian pen-knife and implement compendium of polished steel between silver-mounted mother of pearl sides, it packed a selection of blades, a corkscrew, a hand vice, augers, a wad punch and other tools along with a silver fruit knife marked for Sheffield 1817, into its handy 43/4in by 21/2in ( 12 x 6.5cm) frame.

The auctioneers expected it to go over its £500-800 estimate but not in the way it did. Dealers took the
bidding much higher but were finally beaten by a determined collector with a bid of £7200.

Nor was the first description of the knife misplaced, incidentally. The collector’s speciality was Swiss Army knives.