Primarily Petroliana Shop Talk Forums Shop Talk Petroliana Forums General Petroliana Discussion Pennzoil Bell

Here's some info.
This picture is 1929.
The sign on the door is still round.
So fair to say no oval sign would predate 1929??

Also, the logo graphic on the back of the truck looks like the more artistic type graphic logo on the brown sign that Randy posted and the green one that Paul posted.
So fair to say that in 1929 the bell must still be brown?? So to answer the OP's question, it must be early 30's?

Just kicking it a little further down the road.

BTW, this picture is awesome!! Look at he visible behind the truck.