Looking for this lens if you have one for sale in fully functional condition, clean lens elements, smooth focus ring, clean aperture blades. Barrel condition not so important. Doesn´t matter what mount it is, I´am planning to use it on mirrorless cam. If you have Nikon or Pentax mount it can be only lens without extender, otherwise prefer to buy both in one package. Shipping tracked to Europe /Czech Republic/. Payment by PayPal. Thank you,Mark.