VERY RARE Vintage Yamasaki Congo 21 cm F4.5. Large Format Barrel LENS. Glass is without hazing or fungus. Front element shows some extensive wipe marks but they do not. Cause noticable effect on pictures. Aperture blades work nice. This is a great item for a great price for using. Comes with a mounting flange. Buyers with a feedback of less than 10 points should contact me first!