By Arnold and Sons, this is the “Desideratum”, a rare combined knife and fork for amputees. It was a registered design for February 1881 as shown in watercolour image from the Nationa Archives, Kew. Made of steel the finish is dull and superficially rusty, however in good working order.
Ask the Dealer
Fletcher Wallis sells objects and books relating to the history of science, medicine and technology from his unit at Admiral Vernon Arcade Portobello Road. He publishes books through Vernier Press, including Antique Medicine Chests, and Corkscrew Patents from 1795. He has been dealing for thirty five years.