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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>Officials. &nbsp;1949 registered airmail envelope to Germany with Royal Visit pairs, and the 1947 Official 2d with Type O13/14 overprint in a vertical pair, Windhoek CDS 6.1.49. &nbsp;BPA Certificate (1984). &nbsp;SG O21</p>

SWA SG O21 vertical pair on cover

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