Nikon Nikkor 24mm f/2.8 prime lens. Based on the serial number, it was likely manufactured in the 1970s. The focus ring has some looseness, but the optics appear to be free of major dust or haze. I purchased this lens on an online auction in October 2025 as a "beautiful item," but I am selling it because I haven't used it much. This is based on my amateur assessment. Thank you for your understanding. - Brand: Nikon - Model Name: Nikkor 24mm f/2.8 - Aperture: f/2.8 - Focal Length: 24mm - Lens Cap: Included (not the original, but one I purchased separately)