Call me Dana, please. "Mr. Riddle" makes me feel as old as I really am.I wouldn't be surprised if the peaks match Kessil's photredox lights. Makes sense to use the same diodes.
http://www.kessil.com/photoredox/Products.php
They have a 390, 427 and 467.
EDIT: I see Mr. Riddle already replied. The do seem to line up closely.