She's always been a grail of mine. Smoldering Seduction Daphne is from the 2006 Effanbee collection and was limited to 250 dolls. Her original retail was $229.99, which was fairly expensive. I believe her higher price point is probably due to her outfit. It's made of silk chiffon fabric, plus an embroidered gold and purple embroidered micro-sequined overlay. She also has a rhinestone trim at the bust, rhinestone jewelry, and gold bow-trimmed sandals.
She uses the a pale bending wrist body body (instead of her usual tan skin tone) and has platinum curls. She has blue forward-glancing eyes, not her usual green. I think she is even prettier than her promotional photos.
You can see additional photos of her on Flickr
Surprisingly, I was able to find this doll NRFB from Just Imagine Dolls
, a Tonner/Effanbee dealer.