I have for sale a TC-E17ED in almost mint condition. Lens body or glass is very clean. It was used for research in three projects, the rest of the time it has been kept in a temperature/humidity controlled room in a non-Nikon case (purchased used), which will be included along with Nikon's front and rear caps.
When purchased from KEH, the lens was rated as E+.(As per KEH: "Excellent Plus" = 90-96% of original condition. Exceptionally nice. May have slight wear on finish but visible only under close inspection. Glass very clean.)
Offers over $340 will be considered. I will include shipping within continental US.
Contact me via email if interested: juanDOTshunpikerATgmailDOTcom
Payments through PayPal.