Reaching for his gun?
From left to right: Bird, Mohr, Lohman, Pinédo.
A 'St George' set
Ivory Hong Kong set from the 1960's - 1970's
13-02-1911 - Dutch SDAP leader Pieter Jelles Troelstra during a match with his son Jelle. The set looks (vaguely) a bit like this type: http://www.dorland-chess.com/18-dutch-bone.html