Six printing clichés: (1) Georg Rueter (1875-1966). "Ex libris Ir. M.R. Idema Greidanus"

Printing cliché, metal mounted on wooden block, 5.5 x 9 cm.

(2) Idem. "Aen ieder t sijne. Boekmerk van A.J. Schreuder". Metal printing cliché, 8.2 x 7 cm. Sm. dam spot in lower margin. Without wooden block. (3) Anton Pieck (1895-1987). "Ex libris Dr. M.C. Ennema". Printing cliché, metal mounted on wooden block, 9 x 5.5 cm (corners bevelled). -and 3 more, similar: "Ex libris Dr. J.C. Gerrits" (8 x 5 cm), "Ex libris C.Th. Krekel" (5.5 x 4.5 cm) and "Ex libris Dr. M.H.G.A. Tholen" (8.3 x 4.5 cm), with a printed copy verso of the block. (total 6)