I checked with the Seller, and yes, it had been used ‘a bit’ and then gathered dust on the kitchen wall.
They had kindly given it a wash before posting it to me.
Everything seems to work as hoped … and I don’t think it has even been run-in yet
[ see the note about lack of precision in that link that I posted ]
There is a small but very noticeable patch in the rotation where there must be a high-spot on the cast burr.
… my grounds may be contaminated with slag for a while !!
I’m sure we will be very happy together … Job done, suitable grinder found, thanks.
MichaelG.