1889/1920, comprehensive used collection with a detailed study plate flaws and field features of the issue crown/eagle and a fairly specialised holding Germania/symbolic representations, neatly identified in stockbook. Including better values like Mi.-Nr. 72a with house order number 8415 or 10 Pf. war-time printing (Mi.-Nr. 86aII) with plate flaw "inner margin line right over REICH bent outwards". Various error determinations of the ArGe Krone/Adler as well as two certificates Jäschke-Lantelme (BPP).
