1885 use of Eastern Roumelia formula Postcard (reinforced splits) franked South Bulgaria Lion blue opt on 5pa black & olive, error opt INVERTED, tied by 'Poste Slivno 20 IX 85' blue cds. SG 13 cat £375, Mi 13IAa cat €350 - both for loose stamp with normal opt, plus large premium for inverted opt on card. (P) (Image1)

Estimate AU$300