This Bulgarian matchbox label is from the 50’s/60’s. The text on the top of the label says:”Asen’s Fortress” and on the bottom it says:”Bulgarian Matches”.
Asen’s Fortress is a medieval fortress in the Bulgarian Rhodope Mountains, 2 to 3 kilometres (1.2 to 1.9 mi) south of the town of Asenovgrad, on a high rocky ridge.