I've somehow managed to never even hear of this. On one hand, it's a bit later than my preferred period. On the other hand, the clip you've got here is fantastic.
I cannot recommend this strongly enough.
Ah, but the Lester films have the incomparable Raquel Welch in her prime and nothing competes with that as a visual special effect.
I dunno... When Marie Gillain suddenly yanks her clothes off to go swimming, the effect was pretty special for me.
I'd never heard of this film before. Clearly I'm missing something wonderful if this clip is any indication.
Track it down - I promise you won't be disappointed.