The Laurence Pope Collection of Portuguese Colonial Banknotes - Part One
Banco de Angola, proof 20 Escudos, 10 June 1973, no signatures or serial numbers, along with stage proofs (4) for the underprint of the same note, one complete, and one each for the 1st, 2nd and 3rd working (layer), the four underprint layers with staple holes at left, otherwise uncirculated and very rare (5 notes)
TBB B428as, Pick 104s £200-£260