Lot 40581 - Austria 1851 Blue Mercury Newspaper stamps

1851 Blue Mercury Newspaper stamps with Il Messaggiere Trolese Di rovereto dated Oct 1851, posted to Trient, Trento, cancelled on arrival, franked type Ia on ribbed paper, Troppauer Zeitung 1853 franked type 1b (RPSL Cert 2017), Gazetta Ufficiale di Milano, franked type IIc sent to como where cancelled sent to Como where cancelled on arrival (Goller Cert 2015) type IIIa on banderolle used Jägerndorf, type IIIb on full 'Wiener Geschäftsbereicht' paper and another part 'Kremser Wochenblatt' with stamp tied on a hand-written address label and a late usage in 1859 on a Serbian paper printed at Novi Sad, type IIIb; some slightly mixed condition (15 items, 7 with Certs)