Sale No. S25022Please note our Buyer’s Premium has changed to 23% + VAT effective from the 1st of December 2025

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A H Baldwin & Sons Ltd has a history that dates back to 1872, and is one of the largest and longest established numismatic dealers and auction houses in the world. As a distinguished name in the numismatic trade, they have seamlessly transitioned into the world of bullion, bringing unparalleled expertise and commitment to quality to a broader audience.

Established in 1872, Baldwin's has been a cornerstone of the numismatic trade, earning a reputation for integrity, authenticity, and a passion for the rare and precious. For over a century and a half, we have been at the forefront of preserving and promoting the art and history encapsulated within rare coins and precious metals.

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1964 10th International Botanical Conference (phosphor) imperforate imprimatur set of four, each with BPMA handstamp on reverse, mint unmounted o.g., fine and scarce. SG 655-658p,var&nbsp;

GB SG 655-658 Botanic Conference imprimaturs 

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Margin Scheme

GB SG 655-658 Botanic Conference imprimaturs

Description