Jan Poortenaar, De Boroboedoer, zes etsen door Jan Poortenaar a series of six etchings, on Japan, with margins all signed in pencil and numbered 158/200, published by In den Toren, Amsterdam, 1929, slight mountstaining, otherwise all in good condition, with the introduction by Prof.Dr. N.J. Krom, in a linen bound portfolio the justification signed and numbered