The "White Line" pad became known as the "Pachmayer White Line" pad after Frank Pachmayer purchased the company and rights to make and market the White Line pad. I believe this was sometime during the 1950's (am too lazy to locate my Pachmayer book); but during the 1940's, the White Line pad was offered as an option by many American gun makers to include the LC Smith gun during the Marlin ownership era. As to dating the pad above, White Line pads by any maker never appealed to me personally, so I wouldn't know how to do that; but do know Pachmayer sold his business many years ago.
