I think it's a 504? But I can't remember exactly, I'd have to look at it when I'm home. All I know is that it's not in Jack's book. Miles Little has one of these pumps though if you're familiar with his collection. I will upload a few pics.
These topics are archived because they are older. You may not post new replies. Contact member through their email in their Profile or by PM message. Help with contacting members