Which now makes it the most expensive photograph ever sold:
https://edition.cnn.com/style/article/man-ray-most-expensive-photograph-auction-record/index.html
https://edition.cnn.com/style/article/man-ray-most-expensive-photograph-auction-record/index.html

My son is 28 and still calls me dada...
It seems that he did a photogram on top of a print...did he? They are so dark (albeit the left one is lighter and slightly more blurry than the right one) and there are no dodging/burning marks around....