These prints were produced by Harper House. Apparently Bradford Bachrach was the one who made the image. Louis Bachrach said the portraits of men were marked Fabian Bachrach, and all the women were marked Bradford Bachrach
The photo appears to be some sort of paperbacked cloth, like silk, satin or nylon. I have 2 prints, each has some water discoloration at the lower edge. I am pretty sure that it could be cleaned but, being a collector, I know better than to try that myself.
Eisenhower