This is a 4x5 camera from Nagaoka Seisakusho. It folds compactly, making it easy to carry outdoors, and is apparently called a "field camera." I wondered if it might be possible to handhold this camera in certain situations, so I bought it used about 30 years ago for around 100,000 yen. I've owned it without using it, but times have changed, and it seems unlikely I'll use it, so I've decided to sell it. Standard 4x5 film holders can be inserted. I don't have much knowledge about the lens board specifications, but I believe it's a commonly used size. The bellows seem to be in good condition. While there is some age-related deterioration, there are no problems with the movement of each part. There are areas, such as hard-to-reach places, where dust remains, and cleaning hasn't been completely done. Rather than attempting to poorly clean the small details, I'm listing it as is.