Sorry, none of the above. Why not buy new? Tried Bintel?
Did find these tho. Damn good buy, for those that use them. Might get 'em cheap. I paid near $100.00 for 4 Meade coloured filters many years ago.
http://cgi.ebay.com.au/7-Celestron-t...QQcmdZViewItem
Tried a search in the threads? There's a big discussion on them somewhere.
HTH.
L.