Gottlieb
Gaucho
It's not much known that Gottlieb's GAUCHO, designed in Autumn 1962 and manufactured from January to March 1963, is -with a production-run of 5,350- the most-produced machine (from any manufacturer) of the 1960's and was previously only topped by Flipper-Games Humpty-Dumpty and Lady Robin Hood. #2 of the most succesful 60ies-Machines is Bally Capersville (5120 units).
Most units went to Europe, especially to "Gottlieb-Country" France where it was very popular.