The Dayton 50 was introduced in 1918 and a 50-V (the 50 with a visible attachment) was introduced in 1920. Some might consider this pump to be rare, but it has limited appeal. It gets back to something I have always said about curb pumps, when a friend comes over to your hose as sees a visible in front of your garage, he says that's a neat gas pump. If he see a curb pump there, he says, what is that?
I have a number of ads showing the pump, but sorry, no parts/repair manuals.
If interested you can email me at: jhsim@swbell.net
Jack Sim
Author, 1st & 2nd editions of Gas Pump ID book, 3rd edition is now available at
www.gaspumpbible.comAir Meter ID book also available