This is an original 1922 black and white print ad for the Gulf Refining Company's process of converting oils including, gasoline by aluminum chlorid.
This 89+ year old Item is rated Very Fine +. Light aging throughout. No creases. No natural defects. No surface rub. No tears. No water damage. There is some bleed through visible on this this ad. There is a small brown blemish in the center of this ad.
Product Type: Original Print Ad; Black / White
Grade: Very Fine +
Dimensions: Approximately 7.25 x 5 inches; 18 x 13 cm
Authentication: Serial-Numbered Certificate of Authenticity w/ Full Provenance
Protection: Packaged in a custom archival sleeve with an acid-free black board (great for display, gift-giving, and preservation)
Keywords specific to this image: Vintage Advertising, Pittsburgh Pennsylvania, Frick Building Annex, Petroleum, Gas, Scientific