France : 5th Engineer Regiment (5e Régiment du Génie) Enamelled Formation badge.

Bi-metal and enamel shield-shaped pin-back unit distinctive as worn on a pocket-fob. The reverse bears the pattern number H.212 and the maker's name 'Noisiel Drago, Marne la Vallée'. This army unit is principally employed on railways and other heavy engineering tasks. Excellent condition.