"Sava" collection

,26Bb (7), 20 (2), 24,Three lingual parcel card, franked with 5,50 K., including 7 (!) 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 !