This is a beautiful large format rail camera made by Sinar. It is an excellent studio camera with a full range of controls. It sturdy and well built but is still relatively light weight for a camera of its size, it would be an excellent 4x5 camera for the studio or for the field.
This one is in excellent condition with light wear. All of the mechanical controls are smooth and the locks are sturdy. The bellows are light tight and sharply pleated and the ground glass is in good condition.
This is a nice one.