This smaller cable style insulator was originally the No.1 Cable, and later renumbered to the No.61 Cable to be grouped with the No.60 (CD 257), No.62 (CD 252) and No.63 (CD 254).
(F-Skirt) MADE IN U.S.A./HEMINGRAY/Nº 61 CABLE (R-Skirt) PATENTED/MAY 2 1893
SDP
HEMINGRAY
[090]
(F-Skirt) Nº 61/HEMINGRAY/MADE IN U.S.A. (R-Skirt) PATENTED/MAY 2 1893 Note: I have never personally seen this embossing, and I question if it actually exists. If you have proof to the contrary, please contact me!