Made in Germany in 1880 for JS Holler & Co's cutlery store in New York City, the beautifully crafted knife predates the Swiss Army knife by 11 years.
According the Smithsonian website the knife - which is 3.5ins wide and 9ins long - wasn't really meant to be carried.
It reads: 'Knives like this were made exclusively for exhibition to highlight the cutlers' art.
'They were so difficult to make they were only attempted by the most notable firms with the most talented artisans.
'They could be seen at various fairs and industrial expositions during the 19th century.'
The term 'Swiss Army Knife' came into being after US soldiers based in Germany during the Second World War had difficulty pronouncing the German name, Schweizer Offiziersmesser (Swiss Officer's Knife).
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