Gulf Oil (American, founded 1907). Three SSP, original "No-Nox Knockproof" gasoline pump plate circular advertising signs.

Provenance: Private Collection, Atlanta, GA.

Approximate dimensions: dia. 10.5".

Excellent color and gloss throughout the fields, with one missing a mounting grommet, all three have a manufacturing flaw under the porcelain located in the blue portion of the field, and one has a bit of orange paint on the reverse. Our grade: 9+ each.