Lot 42132 – 1904, Capt. Calderón, complete set of six ABN stamp-size cut die proofs of the frames only

1904, Capt. Calderón, complete set of six ABN stamp-size cut die proofs of the frames only, engraved in black and affixed to cards with margin below showing die number crossed out and replaced by larger five-figures numbers, as well as a master die proof for the vignette of Capt. Calderón, exceedingly rare.