Fantastic modernist sterling cuff bracelet that looks like a piece of sculpture. The silver is worked in a smooth expanse with curves at top and bottom, tapering to rounded ends. It's great to find such a beautiful bracelet with so much width!
My reference books suggest that the earliest date of manufacture was 1980, and you can see from the surface wear, including light scratches and a couple of minor dings, that this piece was well-loved.
While it is heavy and solid, it has some ability for adjustment to size and can be gently tweaked to fit you. The front varies in width between 2-1/4" and 1-3/4". The inside measurement with a soft tape is 5-1/2", remembering that you have to consider the additional width for the opening. At present, it fits my 6-3/4" wrist comfortably and the opening in back is 1-3/8".
It is marked Hecho en Mexico, Los Ballesteros stylized B, 925, MM-34, and weighs 52.3g.