Three-piece construction, tin with a raised frame affixed to the front cover, magnetic, front cover with a printed and celluloid insignia in red, blue, yellow and black inks on a white base, illustrating the flag of the United Kingdom in the centre, surrounded by the flags of its four allies, clockwise from the left" Belgium, Japan, France and Russia, inscribed "THE ALLIES" above and "1914" below, blank back cover, inside with a scallop-edged pocket stamped "BRITISH MADE", hinged along the top edge, integral snap closure, 45.2 mm x 76.7 mm x 8.3 mm, contact marks and surface rust, better than very fine.