Around 1925-27 signal started producing greases and oils. they created a logo also with the signal on it, but used two colors to show what was being sold at different out lets. the Yellow was for greases. the black was for oils and sprits = kerosene's. lamp fuels. I was told by an old timer they had globes 16" in both the yellow and black logos that hung under the store fronts . the glass was flat and non baked paint was used so the paint over time burnt off. these logos was used on everything. boxes, lubsters, tanks for there fuels,
As this picture of my stack of Signal Grease cans show, Yellow was the color of their Greases, these cans and logo were used up until about 1937.
This decal logo was their first tobe used on Lubsters , later = 1930 was redone tobe used on their first quart can. with out the diamond signal emblem. if you will notice the incircle on the logos and the same corners on all strip signs until 1959 when they changed there logo to the oval.
This globe replaced all the old non baked product globes in 1931 with the grand opening of there chain of filling stations.
[This message has been edited by Dwaine Buck (edited 05-08-2004).]