Help Identifying 1966 Portrait

Hello!

So, I'm stumped. I recently inherited this 33x66 oil (I think) portrait. On the bottom left corner the artist's signature and the date 11-66 is clearly visible... except that to me, the signature is almost illegible! I've searched "Happ Ander" "Napp Amden," etc., and have come up totally empty.

It's a beautiful portrait, definitely multimedia, with lots of texture. I've included links below to this black and white, life sized portrait.

Painting: http://i.imgur.com/PAY7MXP.jpg

Artist's signature: http://i.imgur.com/4DMFPPo.jpg