Vintage Nikon Nikkor K1 Extension Tube Ring Macro Adapter Japan w/ Case

Authentic vintage Nikon Nikkor K1 extension tube ring made in Japan and housed in its original Nikon leather case. The K1 was part of Nikon's renowned K-series extension tube system designed for Nikon F-mount cameras, allowing photographers to achieve closer focusing distances and macro photography without additional optics. Extension tubes increase the distance between lens and film plane, enabling greater magnification while preserving image quality.  This example shows light cosmetic wear consistent with age and use. Original engraved NIKKOR JAPAN K1 markings remain clear and legible. Metal surfaces display minor handling marks, while the original leather case exhibits light edge wear and patina. Mount surfaces appear clean with no obvious damage noted. Untested with camera equipment and sold as a vintage photographic accessory.  A desirable collectible for Nikon F enthusiasts, film camera users, camera collectors, and macro photography hobbyists. Great addition to a Nikon F, F2, Nikkormat, or vintage Nikkor lens setup. Brand: Nikkor Model: K1 Extension Ring Mount: Nikon F Material: Metal Color: Black Country of Manufacture: Japan Case Material: Leather Case Color: Dark Brown/Burgundy Closure: Snap Features: Original Case Included Type: Macro Extension Tube Compatibility: Vintage Nikon SLR Weight: Lightweight  Measurements: • Case Width: 2.75