There is another long-period comet West: C/1978 A1 (a.k.a. 1977 IX, 1978a).

Comet West, formally designated C/1975 V1, 1976 VI, and 1975n, was an exceptionally eye-catching comet, sometimes considered to qualify for the status of "great comet". Using JPL Horizons, it has one of the largest aphelia in the Solar System.