It is a white cardboard with bevelled edges placed between the frame and the photograph. The mat has a double function:
Stardust Memories by Woody Allen with Woody Allen, 1980See all photos from Bridgeman Images
Bridgeman Images - Everett Collection / Bridgeman Images
Your photograph is printed on a high quality satin photo paper in 250g thickness. Thanks to our high-performance printing systems and a sharpness of up to 1440 dpi, we guarantee you a product worthy of the greatest art galleries. If, despite our expertise and precautions, you notice something wrong with your product, we will send you a new photograph at our expense.
Woody Allen, actor, cinema, black and white, vintage