Lot 530
530
Proof 6c 1864 Issue, trial color proofs (U63TC, Thorpe #25b, h, l), three different (Vermilion, Green and Brown on buff entires), two show light staining well clear of design, otherwise very fine, two ex Barkhausenest.

Details
Proof 6c 1864 Issue, trial color proofs (U63TC, Thorpe #25b, h, l), three different (Vermilion, Green and Brown on buff entires), two show light staining well clear of design, otherwise very fine, two ex Barkhausenest.