Joseph, I googled Shepherds, you are correct, read below what I found.

Yes, Shephards department store in Gateshead was famous for using its own plastic or cardboard currency in the 1960s and 70s. Customers would exchange real money for these tokens to use within the store's various departments.
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Key details about "Shephards Money":
Appearance: Often described as deep red or maroon compressed cardboard coins, sometimes referred to as plastic currency.
Function: It was a "funny money" system used to facilitate transactions within the store.
Memories: Many residents remember it as a staple of the store along with its Christmas Grotto and Panorama restaurant, which were popular during that era.
The Store: Located on West Street, Gateshead, Shephards was a major retailer in the area until it was taken over by Shopping City in 1980.
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