Collectie Penningen en Munten Dhr. H. van Osch - Pax in Nummis - 1948 - Medal '300 years treaty of Westphalia / Pax optima rerum (Peace is best)' by Erna Becker-Kahns (Dethl./Ordelh. 299) - bronze 40.3 mm, 27.82 g. - FDC, ex Müller, Solingen, Auction 29 7/6-1990 lot 1399