Based on the typeface alone, I would agree with Jim, this is a B&L made lens. Anyhow, much of the "collectors" value (as opposed to users value) of the lens has been thrown out by polishing the brass.
You didn't answer to what Bausch and Lomb lens i should compare it to ...
From what I've seen, Wollensak lenses are very well documented in the catalogs that survive, but either B&L wasn't very good at cataloging their products, or many of the catalogs aren't readily available. Jim owns (and has owned) a lot of lenses and I know he's familiar with the B&L Petzvals--so I'd think hard before dismissing his identification.
I don't know whether these were made by Bausch & Lomb and resold by Eastman Kodak and others, or whether Eastman made them themselves, but everything thing about the P&S in question in terms of its look and design, including the engraving font, matches up with the examples of the Eastman Portrait Series lenses I've seen.
I'm comparing the the one on Ebay to this one on page 19 http://www.cameraeccentric.com/html/...lensak_10.html .My point is , wollensak has a history with Pinkham but not with Bausch and Lomb .Here is my proof .But i'll be happy to to change my statement if someone can provide provide a similar looking lens made by Bausch and Lomb .We can say that Wollensak had been supplying P&S with barrels since at least 1906 .There is the context and proof of their relationship .
here's a picture of my Kodak lens, as you can see it's the same as the P&S for sell.
Here's one with the Hyatt name. Note that they claimed exclusive. They didn't know those rascals up on Boylston street were selling them too. Probably exlusive in St. Louie.