This is a double patard (stuiver) - Burgundian Netherlands (Brabant) - of Charles the Bold. Numista gives the dates of issue as between 1468-1474, and notes that these also circulated in England. Numista provides 28mm diameter, 3.16 grams weight, and 0.878 fineness AR.
https://en.numista.com/catalogue/pieces97914.html
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