4' x 6' old masters canvas photo background

Looking for a background for individual head shots and prefer an Old Masters in blues and grays or brown tones. No need for anything larger than 4' wide but may be as narrow as 3'wide to be portable. Does not need to be new but Canvas should be free of creases and needs to have a small hot spot centered at least horizontally, so please don't cut up a larger canvas. Hand-painted muslin may be considered if the color tones and condition are good and the price is right. I'm looking for a good deal.