Six small 8vo volumes in contemporary light brown full marbled leather bindings. Spines with five raised bands, gilt ornaments and two title labels. Marbled endpapers and edges. Small scratches on two boards and slight wear to three foots and heads of spines. In the first and the third volume light marginal water staining on a few pages. One page with marginal repair not concerning the text. On front free endpaper exlibris and discrete old autographed name. Vol. I; (II), XXIV, 352 p. Vol. II; (II), 449 p. , (I) blank. Vol. III; (II), 536 p. Vol. IV; (II), IV, 328 p. Vol. V; (II), 395 p. , (I) blank. Vol. VI; (II), 391 p. , (I) blank.