Brief description:
box of colour filters used in binoculars or goggles for spotting submarines, mines, etc, World War I, 1914-18.
box of colour filters used in binoculars or goggles for spotting submarines, mines, etc, World War I, 1914-18.
Classifications:
arms
arms
Identifications:
colour filter / filter
colour filter / filter
Material:
glass; wood
glass; wood
