[Mathematics] Three rare 17th-century titles, incl.: Aritmetica ofte reken-konst,

verçiert met veel schoone Regulen ende Exempelen (...). Beschreven door Marten Wilkens (...). Die vierde ende laeste Druk (...). Groningen, F. Bronchorst, 1669, (4),459,(3) p., contemporary overlapping vellum.

Without portrait. Wormholes and water stain in blank top corner of the first few leaves, vague water stains in the same corner in the final quire, endpapers loose from boards. With another 2 rare 17th-century works in the same field of expertise (1632 and 1658), both incomplete (lot sold w.a.f.) (total 3).