Philadria d.o.o. - catalog 19th auction - April 2018
,BiH P 10,Fieldpost postcard (creased corner) franked with 15 hel. Bosnian (Austro-Hungarian) postage due stamp. The stamp has a hand held cachet overprint "FRANCO". Sent from Bihać (probably on September, 26, 1919), very rare non philatelic use of franco provisionals.