I hope Kevin doesn't mind my jumping in here. Some collectors may not care, but some may want all the variations of a can..... but the can on the right is the less common version (I don't like the word rare) of that can. It has the white lettering near the bottom of the can. A quick count on eBay and there are 75 of this can on the auction site, but only 9 of them have the white lettering at the bottom. For what it is worth.

Alex
Looking for Texaco and Power Gasoline items