Years ago when I was trying to put as much gas pump information on my website I started a section called "Nozzles." To be honest this was to provide two thing, tell everyone what nozzles were on the pump when it was delivered and I'll admit, to sell one of the many nozzles I had at the time.
I can't add, delete, or change anything on my website, it is dormant, Microsoft quit supporting it around 2013, so it sits, and of course I could not rebuild it at the time, mainly because there are over 12,000 images on it, so it sits. but you can see what nozzle came with the 546-B by going to:
petrolianacollectibles.com/bennett%20nozzles.htm
I might even have one, I'll post it here if I find one.
Jack Sim
[note: Jack's site no longer working. Go to archive instead.]
https://web.archive.org/web/20180819041636/http://petrolianacollectibles.com/pc-1.htm