Vintage Onehander 10\" Self Adjusting Wrench Made in Germany Pipe Tool For Sale

Up for sale is a vintage 10\" \"ONEHANDER\" Self-Adjusting Wrench, manufactured in Germany. Features a spring-action, self-tightening design that grips as pressure is applied. A classic, hard-to-find piece of German tool history that makes a great addition to a vintage tool collection or display.
​Condition Details
​Teeth & Jaws (Please Read): The serrated gripping teeth show significant cosmetic and functional wear from past use. The outer tooth tips are noticeably flattened and rounded down. While the deeper inner valleys still have enough contour to grab onto larger stock, the teeth are definitely worn and no longer sharp. Please inspect the close-up photos carefully to judge the jaw condition for yourself.
​Mechanical: The spring mechanism and pivot action are tested and fully operational—the jaw opens, closes, and snaps back smoothly without binding.
​Cosmetic: Pre-owned vintage condition with a dark, authentic patina, surface discoloration, and expected shop wear throughout. Handle stampings remain clear and legible.
​Included
​(1) Vintage 10\" Onehander Wrench