Hello I have a lightly carried Ultra High End Production Kwaiback MK4. It has light carry marks but was well loved and cared for. Superb action. lock up and centering are perfect. Adjustable detent is the best!! If you need pics I can bombard you with anything you want!! trades- modern folders. Customs, CKF, WE, Reate and others welcome. Just offer....you never know. Also listed for sale In that section. I would do yours + $$ or possibly multiples. Users welcome too. PM or [email protected] any questions or offers.