How old is your Iver Johnson 22 super shot serial number 12889?

There were 3 models of the Iver Johnson supershot revolvers.The first model was made from 1928-1941 and was marked 22 supershot on the left side of the barrel.The second model was made from 1932-1941 and was marked .22 Supershot Sealed Eight on the left side of the barrel,The third model was marked as the model 844 and had a unfluted cylinder.This was made from 1955-1957.