Sorry Matti, I can't help.
It sounds lovely....
This is taken from the APS (American Peony Society, the International Registrar for Peonies) ......
"FINLANDIA - Registered by Busse Gardens, Cokato, Minnesota, July 16, 1984. Originator - Pees, Belle Center, Ohio - Busse Gardens. Seedling #12-20- Row C 23 (Busse Number). Parentage unknown, first bloomed prior to 1978. Bloomed 1979, Cokato, Minnesota. White Japanese, good substance, 36-40" height, strong stems, late bloom. This cup-shaped flower has a pale yellow center appearing almost white. Very floriferous."