Iron blade from a spade (also known as a spade iron). Medieval spades had wooden blades, sometimes fitted with a separate iron edge. In 1356 the stock of an ironmonger, John Leche, in Cornhill, included a 'spadierne' (spade iron) and two 'augers' (drills) together valued at 12 shillings. Museum of London.
Late Medieval 15th century
https://www.museumoflondon.org.uk/copyright Museum of London
“Spade Iron,” Medieval London, accessed August 2, 2021, https://medievallondon.ace.fordham.edu/items/show/499.