this gun number 1503 i thnik was about 1930 has the stock swivel ,,its a great gun built on a sporter star gauge action /barrel but i may have the forend shortened and a griffin side mount added ,,i like barrel band swivels and a short forend so it may happen if i dont sell it beforehand ,,i doubt there is a time period where they were used as ive seen them on early as well as late guns.....paul