Two-Faced
GEMATRIA:
"Neptune" = 38 (Chaldean) ---> 3+8= 11
"Two Faced" = 38 (Chaldean) ---> 3+8= 11
["Since Chaldean numerology equates 38 with 29 and 47, "Two Faced" fits with Chaldean definition of 29 which involves "deception of others" and "grief and deception caused by members of the opposite sex".
Neptune is about illusions. Being two-faced is basically causing an illusion.]
[See "Anaretic Degree" section for more on 29]