Frank, the * marks the shell you need for that Model 21 Duck if you take it to the ring --
July 1, 1929, bottom of page 17.jpeg
Western Cartridge Co. offered that 3-inch, Lubaloy, Pigeon Load from July 1929 into 1949. Wonder if it was the load Spencer Olin used when he won the International Flyer Championship at Kansas City in 1933?