50 Kopecks special stamp "agriculture exhibition - Head pavilion" with black typography overprint "Laisvi Telsiai 1941. VI. 26" in type IIIa the 1st issue, mint never hinged, faultless condition, issued only 333 examples, expertized Krischke BPP and photo expertize Prof. Dr. Udo E. Klein BPP "genuine and immaculate", Michel 500.-