According to the Rob Roy Kelly American Wood Type Collection website, this design was patented by William H. Page in 1880. The Hamilton Manufacturing Company called its (nearly identical) version, No. 167. Morgans & Wilcox showed this face (with very slight variations) as Keystone in their wood type catalog from 1890. This is, in my opinion, one of the sexier non-Tuscan, non-ornamental wood type designs – wish I had more than a couple sorts.