The taper attachment I have appears to be only mostly complete. It resembles the 7515 taper attachment, but it's missing the shaft, the taper adjusting screw, the cross feed lock bolt, the gib, the upper slide, and the nut holder assembly. In addition, the taper slide isn't graduated on either end. (These names are from the 7515 Installation and Operating Instructions dated 1953, which is about 10 years more recent than the lathe itself). The nuts and bolts all look a little different than those illustrated in the 7515 publication. I may still find some or all of the parts that are missing, but probably not. I'll post some photos.