Wow, that is a tough one. Well I don't think it is a Gottlieb or a Bally, definitely not a Stern. There is a 'dead' bumper at the top of the photo - Bally didn't use these on this era pin, they used the 'mushroom' bumper in it's place.

As Andrew pointed out, she looks from the circa 1966 era.

Maybe a Williams? These types of caps (Sunburst 10 points when lit first appeared in 1964 and were last seen around 1969). Gottlieb phased this cap out in 1967 but Williams and Bally used it through until the late 1960's.

Tough one Greg! Maybe a pin made in Europe?