BULGARIA: Proof set of 7 coins (1981) commemorating the 1300th Anniversary of Bulgaria, composed of 1 Stotinka, 2 Stotinki, 5 Stotinki, 10 Stotinki, 20 Stotinki, 50 Stotinki & 1 Lev (1981). National coat of arms within circle on obverse. Denomination above dates within wreath on reverse. Inside slabs by NGC "PF 68 CAMEO", "PF 68 ULTRA CAMEO", "PF 67 CAMEO", "PF 68 CAMEO", "PF 68 ULTRA", "PF 69" & "PF 69 CAMEO" respectively. Cert numbers: 6635453-007, 6635453-009, 6635453-021, 6635453-012, 6635453-014, 6635453-016, 6635453-018. (KM 111+112+113+114+115+116+117) & (Nikolov 158+159+160+161+162+ 163+164).