For the life of me, I couldn't figure out what you meant by a smaller nozzle with a level on top??? Really had me confused until I used my magic deciphering machine and I realized that you meant "lever" instead of "level".
OK-----From the picture it looks like one of the Gas-O-Gun type of nozzles. I have seen them before but don't remember the name? Did you go thru the full list of nozzles on Jacks website? I would think he would have it listed somewhere???
I just looked and there is a good picture of it on his website with the notation that its his belief that all of the nozzles for Ereie pumps, were supplied by Buckeye!
http://www.petrolianacollectibles.com/erie%20nozzles.htm