Oster Stewart Shearmaster 2.5” Head EW311A 1531-01A

It does work, but the blade is dull and so we have switched to using someone else’s spare that they had. If you get a new blade or sharpen this one it would be real good. Says on the box that it takes PC10 comb and PC3 cutter. The one finger is broken on the comb. Comes with a sharpening stone and a manual and some other peripherals. It’s kinda dirty and waxy from wool.

eBay