The "(Conta-4)" at the end of the product name is a serial number for product management. Operation confirmed. This camera is an MF SLR camera that uses the so-called Contax/Yashica mount, released by Yashica in November 1975. It was the first Contax-branded camera developed by Yashica and was their flagship model at the time. It functions well. The body has some scratches and dirt. The leatherette and light seals have been replaced, but it's a DIY job. There is a thin plastic film between the leatherette and the body, and the film is slightly lifting at the edges of the leatherette. The shutter curtain has some slight distortions and spotty dirt, but I don't think it will affect practical use. There is a little dust visible in the viewfinder. The mirror and prism are generally in good condition for their age. The lenses are two: a Yashica MC Zoom 28-80mm 1:3.9-4.9 and an RMC Tokina 80-200mm 1:4. Both have some dust inside and slight clouding, but I don't think it will significantly affect the photos. The eyecup is a genuine Contax product and can also be used as an eye cap to prevent light leakage from the viewfinder. The strap is a genuine Contax product, but it shows considerable signs of use. The filters are a Kenko MC Skylight (1B) 58mm and a Kenko Skylight 55φ, with scratches and dirt that do not interfere with photography. The batteries used for operation confirmation (4LR44) are included, but they have been used quite a bit and are not expected to last long. *Included Items Contax RTS body Yashica MC Zoom 28-80mm 1:3.9-4.9 (with Kenko MC Skylight (1B) 58mm and a Sigma cap) RMC Tokina 80-200mm 1:4 (with Kenko Skylight 55φ and front and rear caps) Lens hood: None Strap: Contax genuine product