Your pump is a version of the Bennett 155, it is not shown in my Gas Pump ID book. This pump was sold to anyone, but Bennett prepared these for Tydol when they bought them, that thing on the top is for a special globe/ad glass whatever, most of us call it the shoebox globe. I have a parts manual available for this pump, it is shown on this page of my website:
http://petrolianacollectibles.com/bennett%20135.htmJack Sim
Gas Pump ID book 3rd Ed., available soon.