From the 1934 film Viva Villa.

This was drawn by my father Richard Norman Stone (Dick) when he was sixteen year of age,  in 1934. It was done with a tuppence  mapping pen and India ink, and is a portrait of the Mexican revolutionary Pancho Vila, as played by the Hollywood actor Wallace Berry. The story is that my father locked himself in his bedroom at the family home in James Street, West Brunswick, one Sunday morning, and came out that afternoon with the drawing, having had no lunch. This seems a little far-fetched, as the detailed work would surely take longer than a day to execute. It is nevertheless a remarkabl piece of work, by far his best as far as I am concerned. The detail is exquisite and would have required exceptional skill and patience. 

The drawing was hung in the local picture theatre when Viva Villa! was screened - probably the Western, in Melville Road, West Brunswick, Melbourne, Australia. 

And for those not ancient enough to know what 'tuppence' is, it means two pence, about two cents, although not in buying terms of the day of course. A tuppence mapping pen was a thin stick of plastic (much thinner than a pencil) with a tiny fixed ink nib. They were used mainly for drawing purposes, and were disposable.