...these signs showed up on eBay, and were the subject of another post by 'gasmelincelr'...as I am absolutely positive that these are fake signs, I started a new post under 'Known & Suspected Unmarked Reproductions' with photos, for future reference...
...the typeface (font) used to reset the 'MEDIUM' and other lettering is either Microgramma or Eurostile (those are the font names)...those fonts were not designed until 30 years after this style of Socony sign would have been used...from Wikipedia:
Microgramma (similar to Eurostile) is a sans serif font which was designed by Aldo Novarese and Alessandro Butti for the type foundry Nebiolo in 1952. It became popular for use with technical illustrations in the 1960s and was a favourite of graphic designers by the early seventies, its uses ranging from publicity and publication design to packaging, largely because of its availability as a Letraset typeface.
Eurostile (sometimes misspelled as Eurostyle) is a geometric sans-serif typeface designed by Aldo Novarese in 1962. Novarese originally made Eurostile for one of the best-known Italian foundries, Nebiolo, in Turin.
Eurostile was developed, because although the similar Microgramma came with a variety of weights, it had only upper-case letters.
...beyond that, and more obviously - these signs are ONE-SIDED...the originals were double-sided and attached to the top of the spigot on the lubester with a clamp, one half of which was part of the sign...