American Stamp Dealer Association (USA). Bundesverband des Deutschen Briefmarkenhandels (DE).
Nederlandse Vereniging van Postzegelhandelaren (NL). Complete collection including the A- and B-numbers right till the end of 2021, housed in 12 albums. Face value alone over 2047 euro!! Under face value + all guilder issues + the albums for free! We made many more pictures of this lot.