The serial number will identify the year of manufacture. You can post it here for an answer or use the Browning website. The Browning website is a little difficult to use for some models and years. Try the link, and if you have problems, ask the question here again with the serial number.
Go to the Browning link attached to this answer. Be sure to print it out and save the drawing. Many people glue the drawing on the inside of their forearm where it won't hinder the barrel and recoil spring.
Multiply the number by 1/5 or 0.2
5/25 = 1/5 so it's a 1 to 5 ratio
determine the weight of one liter of water at 5c in pounds?
1971
your browning auto-5 was made in 1925.
your browning auto-5 was made in belguim by FN in 1914.
Your browning auto-5 shotgun was produced in 1931.
Your browning auto-5 wa made by FN of belguim for browning in 1931.
Your question cannot be answered,without you providing a serial number(to determine the age)of your shotgun.
1933
1969.
1952
Your Browning auto-5 16 gauge shotgun was made in the year 1931.
Your browning auto-5 standard was made in the year 1927.
your browning 16ga auto-5 shotgun was made in 1949.
Your browning auto-5 shotgun in 16ga. was produced by browning in 1953.