This Taylor Hobson Cooke Amotal Anastigmat 2 inch f2 lens is a rare lens in prettynice condition: optically clear, with light coating marks,a working (though slightly oily) diaphragm, and an adequate M42 mount. I say “adequate” because- while it is a functional, original “Made In Italy” unit- the design of the lens and focusing mount makes it difficult tosecure this to a camera without jamming the focus, as it appears to be a straight helicoid with no hard stops. Sothread it carefully! Imaging is quite nice, as you’d expect.