Cheb, Czechoslovakia: Es-Ka Bicycles, [ca. 1920]. Ephemeral poster stamp (13cm). Single thin sheet with shorn top edge; some toning to front and foxing to rear. Very Good or better. First called Elite, Es-Ka Bicycles was founded in Cheb, Czechoslovakia in 1911 by Ambros Swetlik and Heinrich Kastrup. Located..... More