I have a 135mm F3.5 SMC Pentax-M K-mount lense for sale. This is an original from the Asahi Optical Co. in Japan. It is a great lens for wide field and constelation shots. It has a retractable glare/dew shield and comes with both caps. It is in very good condition except for a few flakes of paint missing on the glare/dew shield (seen in picture). Glass is clean and clear of any defects.
$65 plus shipping.
Thanks for looking, Robert.