Plaque - Vacuum petroleum sunflower

Vacuum Oil was founded in 1866 by Matthew Ewing and Hiram Bond Everest, from Rochester, New York. The lubricating oil was an accidental discovery; while trying to distill kerosene, Everest noted that the residue from the extraction was suitable as a lubricant. Soon after, the product became popular for use in steam engines and internal combustion engines. Ewing sold his stake to Everest, who continued with the company. [ 1 ] Vacuum was bought by Standard Oil in 1879. plaque of the famous Vacuum Oil Co brand
this plaque is the first one that appeared
later
this is a very rare Portugal plaque
the plaque is not enamel
shipped by DHL carrier
or CTT Portugal