Very rare British tank internal engine part a round plug recovered from the site of destroyed tank in Bourlon Woods the November 1917 battle part of the Allied Cambrai offensive

This is a rare find from the battlefield a British first World War Tank part. This is a large screw in plug which is pretty much undamaged from the internal engine area it is in relic but solid condition it is rusty but not crumbling or braking up it has been very very well cleaned it is 3 inches wide and is lovely for any collection perfect to display. This part was recovered in 2013 from  the site of  a destroyed tank in the Bourlon Woods the November 1917 battle part of the Allied Cambrai offensive. The part comes with a A5 laminated information card.