I have this Mk2* pig-sticker bayonet with slightly unusual markings and which I'm guessing to have replacement markings following a refurbishment? I would be interested to know who may have marked their No4 bayonets in this manner, No4 Mk2/1??? As can be seen, on the reverse side there appears to be a digit "8" in the centre and possibly a "P" at the edge. Thanks for any information.