Co-op Token. County Durham, Darlington, ND, circa 1960, obverse; DARLINTON CO-OP & IND. SOC. LTD, 3D, reverse; 3D, 25mm, 1.46g, square black plastic with cut corners, apparently used for orange juice, Rains-16, VF+.
Reference; Douglas Roy Rains, Co-operative Checks & Tokens
, 3rd edition, 2014.