THOMAS BOSS & CO. A 12-BORE ROTARY-UNDERLEVER HAMMERGUN, serial no. 1765, for 1860 and likely conversion from pinfire, 29 3/4in. black powder only bold damascus barrels, the rib engraved 'THOMAS BOSS & CO. 73 ST. JAMES'S STREET. LONDON.', 2 1/2in. chambers, bored approx. true cyl. in both, single bite rotary underlever, carved percussion fences, rebounding back-action locks signed 'THOMAS BOSS & CO.', grip safety, bold acanthus scroll engraving with scrolling borders, brushed bright finish, 14in. figured stock with scroll engraved steel buttplate (dented), fore-end with crosspin release (one escutcheon damaged) and missing finial, weight 6lb. 10oz., in a brass-cornered oak and leather case. S2 - Sold as a Section 2 Firearm under the 1968 Firearms Act

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