Primarily Petroliana Shop Talk Forums Shop Talk Petroliana Forums Petroliana Value Questions Looking for information on 72" Porcelain BAY Sign

I don't know sign values but it is from the Bay Refining Co.of Bay City, Michigan founded in 1939. Bay was bought out by Dow Chemical in 1956. The refinery was closed down in the mid-1970's but the brand continued to be used into the 1990's by Spartan Oil & possibly other companies.
Bay was the 3rd largest Michigan refinery in 1948.

Dave