Go to this page of my website: http://petrolianacollectibles.com/pc-1.htm
Click on nozzles and go from there. It looks like you nozzle was available around 1932.
Also search the pump companies looking for your nozzle, it may have been original equipment on a pump.
Don't assume anything about a pump or a nozzle, the #1 is probably a casting number.
Also notice, almost all nozzles came either with a straight spout or with a flexible nozzle.