[Gary in La.]

In Lorin Sorensen's book "FORD GOLDEN FIFTIES" in the 1950 chapter it's stated that Ford was trying to lower weight and cost of the new cars. This came under the direction of Gordon Buehrig who introduced the "new" high impact molded acrylic plastic. It was put into production for the tail, park and back-up lenses. Suspect the previous glass lenses were used until gone so there probably was a mixture for some time off the line.