(CURIOSA.) [Bayros, Franz von.] Choisy Le Conin. Bilder aus dem Boudoir der Madame C. C. 30 erotic and phantasmagoric heliogravure plates by von Bayros under his pseudonym Choisy le Conin. Sheets measure 250x212 mm; 9 3/4x8 1/4 inches, wide margins, corner-tipped to window mounts, glue sometimes bleeding through. Folio, plates and title-page laid into publisher's 1/2 vellum gilt over patterned board portfolio, discolored, joints splitting, title penned by owner in ink on front cover recto. first edition. one of 200 copies of this scarce subscription-only publication. Np: Privately printed, 1912