New & unopened. I purchased 2 sets to make twin 8" scopes. I used the first and never even opened this set. I am doing more imaging, so the scopes have to clear out. These are still wrapped as from the Discovery factory. No waiting. This is ~$75 off a brand new set from Discovery and these are brand new. I have made 2 scopes from the Discovery mirror line, and they make very good mirrors.
Quote from the Discovery site:
Our premium primary mirrors are manufactured with Pyrex brand glass with a 1:6 thickness ratio. Guaranteed diffraction limited performance. Offered only with enhanced (94%) aluminum coatings. Other sizes quoted on request.