Banco de Angola, progressive proofs (4) for the 500 escudos note of 1973 various underprint stages and with a watermark depicting Luis de Camoes (Pick 107pp), all with handwritten ANGOLA 500 ESC FRONTS, 18-1-74, 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, 66 EPQ, 66 EPQ, 65 EPQ, 66 EPQ Gem Uncirculated, a wonderful selection providing an interesting insight into different stages of printing, scarce (4 notes)