77/ 551 Zwart, P. [N.K.F.]. "Spreekt Hollandsch door Hollandsche kabels (...)". Advertisement, 1928, 31,7x14,5 cm., recto w. letterpress text, verso blank, on thin yellowish paper.

- Vague horizontal fold; 2 small (repaired) tears in blank margin.

= PROOF. Monguzzi p.60; Müller p.58.