not sure what these discs are worth:
11X KC champion firebird, id say 7.5 or 8/10 not sure of the weight, will try to weigh soon (only a phone number on back) heres a pic http://www.flickr.com/photos/65508892@N04/5964395889/in/photostream
and secondly a CE valkyrie id say 7/10, weighs 173g and is the opaque white. (a name on the back which you can see bleed through to the front, and a number but thats it) here is a pic http://www.flickr.com/photos/65508892@N04/5964395915/in/photostream
CE Valks are the least valuable of the CE's, I have been asking for a quote on one for a while.