2013 Peony Single White Best Performer - Week 3

I don't think I can say enough about this peony to convey its value in the garden. However it's true identity remains a mystery to me. I originally purchased it from Gilbert H. Wild in 2007 as Peony 'Seraphim'. However after doing some research, it is definitely not 'Seraphim'. I took a look at Gilbert H. Wild's current catalog, and they only have 3 single peonies offered this year. It's definitely not Peony 'Isani-Gidui' or Peony 'Krinkled White', as these are mid and mid-late season peonies. This unknown variety is definitely early. So the only one it might be from this year's offerings is Peony 'Silver Shell'. I am tempted to order one of these roots for comparison purposes, but I'm quite sure that Gilbert H. Wild would just send me yet another mislabeled peony. I think they just pull their plants at random to fill orders! I will have to check out their catalog in future years for other possible identities. Anyway this particular peony is just stellar. It blooms for weeks, with a multitude of blossoms that are long lasting and gorgeous. The foliage is a lovely dark green, very tall and full. It is also very fertile, producing lots of seed. This peony has loads of buds per stem. So the blooms just keep coming and coming! If you have any ideas about this peony's true identity, I'm open to suggestions! :-)
Peony - Single White (Unknown)
Southern Peony Best Performer