Sorry, now sold
This is a Rodney Milling Attachment, as made by Tew & Gautrey of Northampton, with mounting block and clamps to secure it to the bed of a Myford ML7 or Super 7.
Complete with the morse taper draw-bar that runs through the spindle of the lathe, plus the internally splined flexible nylon coupling that connects onto the milling attachment.
A new drive belt has been fitted within the head of the unit.
A short video showing this item can be seen here, and further photos of this item are in the gallery below.