CD 134 with the 1871 Patent. This thing must have gone through a fire, although I don't know how it did not shatter in the process. Outside of the obvious oval shape and a hazy, pocked surface, the insulator is about perfect condition. When I showed it to my friend Bill, he jokingly said without missing a beat, "That has to be worth thousands! Do you know how rare the Oval Pin Patent is ?" Well, you can have this unique 110 year old novelty for an easy $20 + shipping.