The prefix of 75x indicates that your Browning shotgun was made in the year 1975.
It will be marked where it was made.
A shotgun.
1972-1987
100-10000 USD depending on specifics.
50-575 usd
The A5 20 ga. was made in two models: Light 20, and Magnum 20. The Light twenty, sometimes just reffered to as a "Browning Twenty" was made from 1958-1976 in Belgium. The receivers are marked "Light Twenty" The Magnum version has a 3" chamber and was made in Belgium from 1967-1976. The receiver on this gun will say "Magnum Twenty" Other differences are the weight of the models
If you have one in 20 gauge,these were offered with either a 26in,or 28in barrel.If you have a Browning magnum shotgun in 12,or 20 gauge,then these were offered in 26in,28in,30in,or 32inch barrels.The same with the non magnum 12 gauge model.
You have a magnum 20 gauge auto-5 shotgun that was made in the year 1967.
50-600 usd
12 gauge BSS were first made in 1971 and 20 gauge in 1972.
50- 550 usd