Back together with the 12V PSU now.
Having had another gander at the motor (a fine product of the matsushita corp. it is marked 9,12V.
By which I now think they must mean ?Anything between 9 and 12 V or thereabouts is fine round here.
Alls well that ends well!
Now to install it back in my bar, where it will probably gather dust unloved and unused for the next 20 years (It previously came in very handy digitising a few LOs which were made of Unibtainium-Digitallis.
Although, as it happens I?ve found a couple of them online since.
Chris