Thanks for visiting my auction, this is for a BJ Orbit 4x5 View Camera with an Eskophot Ultragon 150mm lens. These cameras were marketed under various names , and were a great entry level view camera with a multi movements and monorail portability and versatility. They take normal 4x5 double film holders . This is a good tidy example , I bought it minus the rail , and have used a length of chromed tube that suffices . The lens is reasonable with a small patch of fungus on rear element , not hard to clean.