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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>1912 ½d bluish green, die 2, mint unmounted o.g. superb lower left corner control B12 block of thirty of this scarce shade which is believed to be the largest known multiple. RPS Certificate (2025). SG 339 var, Spec N4(5)</p>

GB 1912 ½d bluish green, die 2, mint unmounted o.g. superb lower left corner control B12 block of thirty

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GB KGV shades and Seahorses for next GB auction.

Margin Scheme

GB 1912 ½d bluish green, die 2, mint unmounted o.g. superb lower left corner control B12 block of thirty

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