CD 155 [020] KERR    DP1 // MADE IN U.S.A. 29 72 {3 dots}, smooth base, flat top

These were made by removing the bottom piece of the mold and letting the glass fill the cavity left by the bottom plate.  This insulator was made in mold 29.  The mold was made in 1972 and the insulator was made in 1975, very near the end of Kerr's production.  It came from a worker who worked at the Kerr factory.

Created Oct. 16, 2002