A number of spectacular finds have been discovered during years of community archaeology excavation at the site of Randall Manor. In 2011, at the end of the excavation season, a metal detector sweep revealed the non-ferrous signal of complete lead flask .
Details were published in “Mayfield, A. (2014) Enigmatic lead flask from Randall Manor, near Gravesend. Kent Archaeological Society Newsletter, Spring 2014, p.16.”, reproduced below (click on the image).