USA - Hundreds (!) blocks of four mint stamps including...

Unique compilation of hundreds of four-blocks in two historic White Ace albums: Part I: the most diverse four-blocks including English-language commentary per issue Part II: the most identical four-blocks, but each with the plate number in a unique position in the margin All behind a transparent Hawid on special sheets for plate numbers. In two original White Ace albums, made in Washington, D.C. All stamps still postage-valid! View the photos for your own impression. Everything is depicted. Free shipping to countries where most buyers come from.

Estimate:£25.48

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