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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>1974 Centenary of the Universal Postal Union 8p, ‘traffic light’ inter-pane block of four, each with BPMA h/s on reverse, full unmounted o.g. very fine and scarce. SG 956var&nbsp;</p>

GB SG 956 1974 UPU 8p imprimatur block

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GB SG 956 1974 UPU 8p imprimatur block

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