Groningen - Groningen Stad - Halve Jager, Vlieger of Stuiver van 6 plakken 1597 on square flan (HPM Gr 14.1 / CNM -, cf. CNM 2.21.13 / V. 187.3 / Pu. 1.617) - 4.10 gram - Obv. Double headed eagle with city arms / Rev. City arms on short cross, date below - XF - ex-Berkman - collectie Coenen - extremely rare and never offered by us before