An enterprising travelblogger named Nathan visited a place called The Sex Museum in Amsterdam and snagged the following picture of an imagined early sex machine:

Nathan snagged a lot of interesting pictures, actually, so I strongly encourage you to take a look at his post on his visit.  (Don’t be misled by the fact that the first part appears to be about cats.)  The Sex Museum’s website appears to be here, and it sounds like four euros well spent, should you ever be in Amsterdam.