I don't think the reflection is missing in this photo because off the position off the sun and the mountains around the person and his part off...
The date off the print is according to https://collections.lacma.org/node/244206 from 1972 and the actual photograph was made in 1955 by him . So...
Yes he was but what to ask for my art work now ? have not found the same one signed or not signed yet
Thanks and going to have a look how to find out the prices asked and paid in the auctions to get a price for mine .
Own this big photolithography from Davis Douglas Duncan for a long time now and is pencil signed by him . One found on the net...
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