Looks like a Platnum Pearlscale (p/p - pl/pl) two sets of a double resesive gene. There looks like there could a curature in the dorsal fin. I'd like to see a picture with the fins extended.
I just recently started seeing these around also
The white they have looks alot different then other asst. White angels
They go for like $15 here in LFS
Really nice looking angels though