Venezuela 1900 1b Slate Without Overprint Error LM Mint. Scott 160a

The key stamp to an advanced Venezuelan collection. The total number of copies of the so-called "Bolivar Negro" extant is not known but it is estimated that no more than two sheets escaped the 1900 overprint. Scott catalogue is $7000. Regummed and mild toning with penciled expertisation signature on reverse. 2005 BPP Dr. Knut Heister certificate.