What about a Pachmayr pad marked " White Line " on a trap gun, but it doesn't have a white line as every Pachmayr I've seen. Back of the pad also shows Pachmayr Gun Works, Los Angeles 15, California U.S.A. (no modern state abbreviation " CA " and no zip code)

Goggle search shows that " CA " abrreviation and zip codes were both introduceed in 1963.

Can anyone date this pad for me? Why is there no white line molded into the base? Tx in advance.