score:6
I was able to acquire access to the Picture Post archive which you link to. The June 3, 1939 issue has a special feature: "Colour Photogravure: History of 100 Years in Photographs. 7. The Indian Mutiny", pp.35-42.
The photo shown in your question appears on p.39. The caption reads:
The End of Two of the Mutineers
After the mutiny was put down, many of the mutineers, including leaders like Tantia Topi, found their way to the gallows. Reprisals were severe; but the outrages committed by the rebels wherever they managed to seize control, such as the massacre at Cawnpore, made reprisals inevitable. The Nana Sahib who ordered the massacre of Cawnpore was never found, is believed to have died while fleeing from British troops.