Austria, Vienna, 1918, vase made of clear glass with nails, design by Michael Powolny for J. & L. Lobmeyr glassworks, overall dimensions 13 x 11 x 11 cm.
Literature: Videnska secese a moderna 1900 – 1925, Uzite umeni a fotografie v ceskych zemich, Miroslav Ambroz, collective, Moravian Gallery in Brno, year 2005, description and picture No. 179.