Banco de Angola, progressive proofs (4) for the 100 escudos note of 1973 various underprint stages and with a watermark depicting Luis de Camoes (Pick 106pp), all with handwritten BANCO DE ANGOLA 100 ESC FRONTS, 11-1-74, on each elaborating stages of working in respective order consisting of 1st, 2nd, 3rd working with the last note having (TRIPLEX) all 3 working stages joined together, in PMG holders, as made staple holes, 65 EPQ Gem Uncirculated, a wonderful selection providing an interesting insight into different stages of printing, scarce (4 notes)