I have a set of five NASCO Royal Colonial dinner plates. They measure 10.25″ and have “NASCO Royal Colonial Warranted 22 KT. Gold Made in U.S.A” on the back. If anyone could please tell me more about these plates and if they’re worth anything it would be greatly appreciated. Here’s a link to a picture of one of them.

http://tinypic.com/r/33wp88y/7

Thanks in advance!