
Beer? Root beer/soda? Lever movement forward engages center flow (direct, through the three-hole restrictor), backward engages outer concentric flow (through the "screw" and into a diagonal channel through the main valve). Two-way lever action and restrictor/screw suggest it was used for carbonated liquids?
"R14328" stamped under lever handle. No other marks inside or out to identify.
From eBay, from an estate sale. Seller has no other information available.
...and that's about all I know. No luck so far with image search. It's a nonstandard shank (1"), and the rear seat on the faucet is U-shaped to fit into something.
I'm hoping to use it in my draft box build, but I'd really like to find some more information about it (both to satisfy curiosity AND for practical installation). Any experts?
It's a full three pounds, 5 1/2" long, with a 1" OD threaded shank. With the brass insert (the restrictor/screw assembly) it looks like it'd be hard to attach a tail piece and hex- or wing-nut (assuming I can find parts to fit the 1" diameter shank, one of the practical aspects I could use help with).
More pictures (teardown and such) at
https://plus.google.com/104498679475650296707/posts/WwUXr3HN6ui