Revolutionary War Powder Tester dug at the Siege of Savannah (1779)

This Revolutioary War blacksmith made iron powder tester was dug in the Franco American Siege  Lines of the Battle of Savannah during modern construciton in the 1990's.  Found with other pieces, nails, tacks, powder testers indicating a military hq and camp.  Black powder is very suscecptible to water  and soldiers of the 18th c. were constrantly checking the quality and if it had absorbed too much mosture.  Measures 3.5 in. tall and 1.25 in. across. Marked with a makers mark of S.  Very rare artifact and even more rare to be found from a souther battle.  From my personal collection.  ex. John Emond collection.