Rare Leica IID black paint ( original not modified ) SN 202342 dated 1936. Later 20-1 version . Accurate speed and first rangefinder Leica w clear viewfinder . Collection item. No round plug on the back means never back to factory service for check focus. Camera only.

https://wiki.l-camera-forum.com/leica-wiki.en/index.php/Leica_II_(model_D)

https://vintage-photo.nl/leica-ii-the-jewel-of-wetzlar/

https://www.cameraquest.com/leica2.htm

https://i50mm.com/gear%E5%99%A8%E6%9D%90/%E8%AF%A6%E8%B0%88%E5%BE%95%E5%8D%A1leica-summaron-35-3-5/?variant=zh-hant