SN 272754. Please note that lens has been home Ai'd. Conversion works good. 

Lens is in good condition. It shows light, if any wear on exterior. Filter rim looks good and it accepts filters. Front Glass does not have any large scratches. Even though I see couple tiny scratches on the coating. I don't see any fungus or haze inside the glass. No dust specs inside. Glass looks very nice over all.  

Performance:

Lens has no known issues. Focus works good. Aperture blades open and close properly. Lens looks and works good.

Lens comes with 90 day money back guarantee. So you can try it, test it and if you don't like it for any reason, just mail it back for a full refund. Shipping is free both ways.