Angola: interesting set of 5 underprint front Proof note booklets from the printing works containing: 1x booklet with 4 different proofs for 20 Escudos 1973 P. 104, 1x booklet with 4 different proofs for 50 Escudos 1973 P. 105, 1x booklet of 4 different proofs for 100 Escudos 1973 P. 106, 1x booklet of 4 different proofs 500 Escudis 1973 P. 107, 1x booklet 4 different proofs 1000 Escudos 1973 P. 108. Rare, condition: XF to UNC. (5 booklets, 20 proofs)