76/ 730 Zwart, P. [N.K.F.]. "Door normalisatie eenheid in qualiteit voor allen (...)". Full-page advertisement, (±1926), 27x20,7 cm. (leaf), recto w. letterpress text and numb. "XIII" in lower right corner, verso blank, tipped onto brown paper mount at corners.

- Sl. wrinkled in corners from tipping onto mount. Dated "1.3.27" in pencil and in black pen on verso mount.

= Dated "1926" in blue crayon by Piet Zwart on verso mount. PROOF. PZ-019.