This is a Mamiya Twin Lens Reflex Left Hand Brack with the Accessory shoe on the top.
This bracket can be uséd with other models as well but was designed for the TLR cameras.

It is in excellent working condition and shows normal wear. 

WE SHIP IN 1 BUSINESS DAY and We package professionally. We are interested in BUYING your photographic equipment as well. We are Camera Exchange located in Waterford, Michigan.