Warning, this post features Victorian porn...
Before the Internet, before porno videos, before XXX theatres on 42nd st, before you could imagine a time there was porn...there was porn.
Very austere & traditional timepieces with concealed secret compartments depicting graphic mechanically animated and intricately painted sex acts. Some featuring such taboo match-ups as three-ways and multi-ethnic couples. Generally the animation consisted of the "thrust" with others much more complex. All produced by integrated or separate automaton movements.
It's a rich & dirty tradition that continues today with some of the most respected watch companies (Ulysse Nardin, Blancpain, Chopard, Hublot and Gerald Genta) selling their own modern haute-porn. Rarely advertised by any of them and some with price tags well over $100,000 US.
Links to modern Erotics
Links to more antique Erotics (you degenerate!)
Alternate titles for this post;
"Dirty Little Horology"
"Gear On Gear Action"