1879, Coat of Arms, 10c black and green, printed on horizontally laid paper, intact perforation, large part of OG, previously hinged, VF, old-time expert's hs on reverse, C.v. $900

300.00

1912, Tsar Ferdinand, 5st pale green, error of color, block of four, full OG, NH, VF and extremely rare, A. Rendon and P. Karavainov certificates, the last one stated that only 40 mint copies survived of 500 stamps issued

1917, Coat of Arms and Scenes, 5st green, 15st slate, 25st blue, three stamps (complete as issued) in horizontal imperforated pairs, full OG, NH, VF, Mi #112U-14U

200.00

Air Post stamps

1932, Rila Monastery and Airplane, complete set of three, full OG, NH, VF, Mi #249-51, ?250

75.00