If your auto-5 Browning shotgun is chambered in 12 gauge,then it was made in the year 1924.If you happen to have a 16 gauge model auto-5 shotgun,then it was made in the year 1928.
The address of the Boone'S Trail Branch is: 10 Fiddlecreek Plaza, New Melle, 63365 M
The address of the Boone-Duden Historical Society is: Po Box 82, New Melle, MO 63365