This lens comes with a Yashica/Contax interchangeable I-S mount with an adapter for Y/C to Canon EOS. There is also a 72mm Hoya HMC Skylight 1B filter fitted for protection.The optics look clean but there is some dust inside. The aperture blades open and close with no problems.It is quite a heavy lens and the spring clip on the EOS adapter sometimes unhooks during focussing. It might be possible to fashion a stronger clip to prevent this.
Comes with a Glenfiddich storage case.

Sorry I cannot offer any guarantees or returns on this item.
Any questions welcome.

EDIT: I Have took some extra photos to try to show a faint scratch on the outside of the front lens and have noticed what looks like some fungus on the outer edge too.