Hereís a sectioned Mills Iíve had for a long time and have only really just looked at it. It seems to be a 'bits' Mills, the body is marked CC for Carron Comp. Falkirk, Scotland, the lever is marked J.P. & S. (Josiah Parkes & Sons) and the base plug is dated Aug. 1918 whereas the centrepiece is either 1941 or 43.
It has remains of white paint, some Xís in red and the lever looks like it was green at some stage. Iíve no idea if itís an official educational Mills or if someone opened it up themselves. A copper tube acting as a det is present as is the percussion cap, both of which I somehow hadnít noticed until today.
It's the retaining pin I find strange, Iíve never seen one like this, it canít be removed unless the bit bent up is straightened which must have been done after fitting it, and I always thought original Mills pull rings were solid and not the key ring type as shown in the photos.