This is a CD 106 SDP embossed : front: HEMINGRAY/No 9, rear: PATENT/MAY 2 1893(note "PA" over "AN"). The old price guide I have does not list this one. Is this one currently listed? Answer: Upon closer inspection, this one appears to be the 260 listing. There is a very faint "P" to the left of the P over A. Doesn't show in the photo, but it is there.