77/ 559 Zwart, P. [N.K.F.]. "Wij leveren alle kabels vanaf 6000 volt normaal met gegarandeerde ionisatie eischen (...)". Advertisement, 1932, 14,7x25 cm., recto w. letterpress text, verso blank.

= Dated (erroneously) "1929" in pencil by Piet Zwart in lower right corner and "21.12.32" in pencil on verso by Kees Broos. PROOF.