Riddle Indian artist

The photo was taken at the Museum of Tata, state Dzhamshepadur, India.
This figure was presented by the steel magnate JRD Tata on his birthday street artist.
The drawing was transferred to JRD Tata is not an artist. However, the latter promised soon to reveal the secret.
Tata did not live to see this day.
And no one could understand. What was on it ... look no further clues





If you insert a picture in the middle of the steel tube (with a smooth surface), you will see that actually shown in the picture on this very tube ...



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