I know little about Martin Ansin, save that he is a free lance illustrator living and working in Montevideo, Uraguay. His web site and blog don’t contain a great deal of biographical information.
His portfolio includes posters for The Imaginarium of Dr. Parnassus, and Taming Light, a group exhibition in Dublin inspired by the films of Stanley Kubrick.
His approach varies from a semi-rendered line and tone style, as in the Phanton of the Opera poster above, to a more fully rendered technique. His archives also include comics and comics themed illustration.
[Note: a couple of images on these sites may be considered mildly NSFW.]
WOW! This is a fabulous find, Charley. The poster is really an eye-opener, and brings to my mind at least, the early turn-of-the-century European posters.