I have a copy of THE GILDED AGE with the "forged" title-page. That same type-setting was used (but with a San Francisco imprint dated 1873) in the prospectus that was used in California (of which I also have a copy). I also have a dozen copies of the usual title-page with variant city imprints, and two copies with secret marks added to the plate by the publisher for unknown reasons. These books are in my private collection and not for sale. Neither BAL, nor any other bibliographer, records the copies with secret marks, or the SF prospectus title-page. I'm extremely busy with Boston bookfair business at the moment but will be happy to share details with researchers next week when I'm caught up. Kevin Mac Donnell Austin TX