This Duplex Measure Was Bought At The Famous John Dutcher Auction By Friend Charlie.
It's The Finest Example Of This Measure Known. One Side Is For Smokeless Powder, The Other For Black Powder. A Small Amount Of Smokeless Powder Goes Into The Shell First, Followed By The Main Charge Of Black Powder. This Allows The Shooter To Shoot "Dirty", Meaning Not Have To Clean Between Shots.