"Sava" collection

,26Bb (7), 20 (2), 24,Three lingual parcel card, franked 5,50 K., including seven (!) stamps of 20 vin., zig-zag rouletted in the rare copper-brown shade, i.e. "Cinnamon" (!!) sent from "Trstenik, a , 9/10, 19" to Zagreb (OKT 13.). The "Cinnamons" are mostly in mixed perforation, zig-zag and line rouletted; four were damaged during separation (which is normal for zig-zag roulette) and are attached to the card as such. An extraordinary and hard to repeat postal history document !