Pre-1924 Ferdinand Drissen

P Kg indicates the weight of barrels. D=65/18.7 - 65 mm chamber with .736" diameter (not bore) and used 1892-1924, and only with smokeless proof. 17.2 - .677" right bore ('overbored' 16g.) and used 1910-1924. 16.3 - .642" left bore (16g full choke.) Crown over M - inspector's stamp. 16 over C in diamond - 16g choked used 1898-1924. Lion over SCH - Optional smokeless powder (Schultze) proof used 1891-1924. (Lion over EC used for "EC" powder.)