Sale No: 0519
Lot No:2921
Symbol:Pb
Cat No:C998,1000 var.
1997 Butterflies, three imperf. sheets of 30, proofs printed on both sides, colors inverted and shifted on row down, v.f. and spectacular group, with Alex Rendon certificates, also a set of issued stamps and souvenir sheet included for comparison (Cat No. C998,1000var) (Image)