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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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1869 6d Mauve Pl.10. ‘Abnormal’. Unused o.g. right hand marginal imperforate imprimatur endorsed with official manuscript in margin showing the plate number and the date the imprimatur sheet was struck 1.IV.1869 lettered BL. A spectacular and unique example of this very rare "Abnormal" issue, one of only 22 possible examples. Cat. £20,000.&nbsp;

1869 6d Mauve Pl.10. ‘Abnormal’ Imperforate imprimatur

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