I would ask for some better pictures (especially of the fuse) and some precision measurements and weight. Verify these using one of the artillery books on CW projectiles which have this item listed. I have seen some faked 6lb. and 12lb solid shots lately which look good until you start to really examine them. If this is a real CS grenade it will bring big bucks. Lately I would say 10 to 20% of dug relics and other CW items on e-bay are fake or misrepresented. Proceed with caution.