76/ 734 Zwart, P. [N.K.F.]. "Half: Hard koperdraad kan ruim voldoende trekvastheid hebben in bepaalde gevallen (...)". Advertisement, 1925, 31x11,9 cm. (leaf), recto w. letterpress text, verso blank, tipped onto brown paper mount along upper and lower margin.

- Dated "17.6.25" in pencil on verso mount. Trifle wrinkled in corners from tipping onto mount.

= PROOF. PZ-065.