SN 3727130. Both caps are missing. 
Lens will be shipped as pictured, so please look at the pictures above. 

Shipping is free within USA and $45 via USPS first class air mail service worldwide. You can choose faster (and more expensive ) shipping if desired during checkout.

Cosmetic Condition:

Lens has been used, but it is in very good cosmetic condition. It looks very nice. I don't see any noticeable scratches on front or rear glass coating. I don't see any haze or fungus inside.  I'd say glass looks very nice over all. Glass is very clean and bright.

Manual focus is smooth, without any play. Zoom works good. Please note that this lens has TX interchangeable mount. TX mount On/OFF pin plastic is cracked. But it still works. I can remove and put the mount back on.