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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 9th Postal Union Congress 1½d purple-brown block of 4 , lower left stamp showing R2/5 '1829' for '1929' (SG NComb7c) top pair hinged, bottom pair, scarce, fine, u/m cat £450 (Plate )

1929 9th Postal Union Congress 1½d...

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