A blue coloured back cover with the front cover which has rutned to a brownish colour with some blue at the bottom of the cover and it looks like possible water marks on the cardboard cover. Top right hand side reads DSN 7610-66-034-5750. There are two punch holes down the left hand side of the booklet.australia - armed forces - service manuals, australina military forces, field engineering, mine warfare, mine "anit-personnell m18a1, claymore mine