Liquidiser goblet from an old Kenwood Chefette (New Marston OX3)

Between us my mother-in-law and I have three 1970s Kenwood Chefettes. In all cases they work well except that the plastic coupling between the goblet and the motor has failed in various ways. Wondered whether anyone had a liquidiser goblet from a machine that no longer worked. I think any A-series model would do.