Stamps and Postal History of the World

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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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1929 Postal Union Congress 1½d, left marginal block of four showing plate/sheet number '2441', imperforate 'IMPRIMATUR' with "BPMA" handstamps on reverse. Fine unmounted og. Superb and a unique positional piece. SG 436 var

1929 Postal Union Congress 1½d, left...

Margin Scheme

1929 Postal Union Congress 1½d, left...

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