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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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<p>1963 6d Paris Postal Conference Centenary (Ordinary). Superb unmounted o.g. bottom right hand corner marginal "2A, 1B" cylinder block of four imperforate imprimaturs, each stamp with a "BPMA" handstamp on reverse. Some light gum disturbance in lower margin from original mounting of the sheet by the Post Office nevertheless a unique positional piece. SG 636.</p>

Great Britain 1963 6d Paris Postal Conference Centenary, Cylinder Block of Four, BPMA Imprimatur, SG 636

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Great Britain 1963 6d Paris Postal Conference Centenary, Cylinder Block of Four, BPMA Imprimatur, SG 636

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