I just discovered this thread.
Though I'm not a big fan of european machines I'm sure it must be said (and that's why I resurrect this thread) that there's at least one spanish artist who really got it.
FANTASY from Automaticos 1970 is absolutely stunning - this chick still looks as great as 50 years ago. Compare this one with Interflips 1977 Dragon.
Other examples are ANA BOND from 1966 and some newer games from Playmatic such as EVIL FIGHT from 1980 or ROCK 2500 from 1985.