Yesterday I found an old Gilbert & Barker pump in the back of an old hardware store. It had been put there in 1923 when the founder moved his store. The tag reads "Gilbert & Barker Self-Measuring Pump Type 206 Model 43 (that "4" could be a messed-up "7"), Serial 10739.
Can anyone direct me to pictures, manuals, parts sources, etc.? I'd also like some idea of this thing's value.
Thanks in advance for any help.