>>2012
I might as well recreate the post I made.
>those planes
Excellent taste, but It's hard to think of many bots from 1970 or earlier that have much porn.
That said, the oldest lewd robot I know of is Maschinenmensch, from the 1925 book Metropolis.
She may not be arousing by today's standards, but she's historically significant.
Fun fact: when the film version was being made, the crew would sip in coins in the costume.