Zeiss f1.5 50mm retailer Lens for Contax Rangefinder

Product Name: Zeiss f1.5 50mm retailer Lens for Contax Rangefinder
This is a vintage Carl Zeiss Jena f1.5 5cm (50mm) lens for Contax Rangefinder cameras or it can be used on most modern digital camera with the appropriate adapter. It seems to be in decent condition. The aperture opens and closes smoothly. There are some small particles on the inside of the lens elements and light scratches on the outside (see pictures). It does not have any fungus or haze as far as I can tell. There is light oil on the aperture blades. Some small cosmetic blemishes on the barrel. Does not include any caps. Thanks for looking, feel retailer free to ask questions.