Check with "chevs of the 40's" they have glass replacement lenses. Spec the ones for the 39 chevy. I bought 2 along with the chrome bezel rings and gaskets. They fit good on my bullets pulled from a burb in the boneyard many many years ago.
http://www.chevsofthe40s.com/ "Chevs of the 40's is the world's most complete supplier of 1937-54 Chevrolet car and truck parts."
That is what they claim anyhow!
Oh BTW - The bullets I pulled from the boneyard had dual filament sockets in them.
Good Luck,
Jim
