I've been looking out for Peill plates to be able to give you an indication, but so far, no limited edition has come to my attention. I'll certainly keep an eye open. The non-limited decorative Peill plates are priced between 20 and 50 euro on ebay.de.
And thanks for posting the vase labels... I know and have the Delos vase, but I'm not sure what the one called Helios looks like. If you ever have the time to post a picture of the vase that came in that box, you'd make me very happy!
Astrid