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There are 16 insulator styles embossed with PATENT - DEC. 19, 1871 that have any type of wire groove and any number of petticoats, shown below.
CD 104
CD 104
CD 116
CD 116
CD 120
CD 120
CD 121.4
CD 121.4
CD 124
CD 124
CD 124.2
CD 124.2
CD 124.3
CD 124.3
CD 127.4
CD 127.4
CD 131.4
CD 131.4
CD 132
CD 132
CD 132.4
CD 132.4
CD 133
CD 133
CD 133.1
CD 133.1
CD 133.4
CD 133.4
CD 134
CD 134
CD 732.2
CD 732.2