75/ 221 [Commercial art]. Zwart, P. (NKF paperweight). Steel paperweight, 5x5x1,4 cm., the NKF logo designed by PIET ZWART engr. in upper left corner, top w. circular glass window, offering view to a cross section of a NKF cable (Ø4,6 cm.).

- Some wear and tiny scratches. = Rare. SEE ILLUSTRATION PLATE VI.