Vintage Chinese Mao with Zhou Enlai. Image moves when titled - Lenticular Print For Sale

This is a highly unusual framed image of Chairman Mao walking the Zhou Enlai circa 1949. What is very unusual is that this is an early 3D type image using what is called lenticular printing. In other words the image changes slightly when tilted. Dimesions are 5\" x 4\".
The plastic frame is in good shape and stands on two plastic \"feet.\" These feet can come off easily so you have to handle it with care.There is a handwritten Chinese inscription on the back of the frame. I purchased this in Beijing many years ago. I also have three other similar lenticular images which I will post.