1912 - 1941, mint never hinged and unused rich collection with among others Michel-no. W2.17, W4 b, W20, W31-33, W 52-54, S35, S54, S58, S60 (2), S62-65, S73-75, S80-83, S84-87, S93-95, S97-98, WZ1, WZ2, WZ5-8, KZ14-16 and so on, in 2 illustrated albums (former starting price 2500)