14 pieces in lot. An immense set of seven Proof face and back pairs with secret marks in the card margins noted. The annotations appear to be printed onto the card and are not drawn like others observed. Impressive and choice condition overall. All are Uncirculated and the majority are Choice or Gem EPQ impressions. This would make a great display and it is from an important, early República series. The proof catalog value for the set is high, but as a "secret marks" set, it deserves a premium. Mixed PMG Graded Notes. From the Eldorado Collection of Colombian Paper Money.