Reminds me of a little old lady who used to run a pub in the village where I live. Back in the 1970s when Ireland changed to decimal coinage , she determinedly refused to change. She kept a small shoe box full of the old threepenny bits, "tanners" ,"florins" half-crowns and ten-shilling and pound notes,under the counter.
Until she died shortly afterwards,she continued to give out change in the older coins and notes, much to the bewilderment of her, mainly elderly, clientele.