Sale No. S25022Please note our Buyer’s Premium has changed to 23% + VAT effective from the 1st of December 2025

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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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1924-26 ½d green, experimental booklet pane of six optd "SPECIMEN" type 29. Very fine mint, unused o.g. (five stamps unmounted). Very rare, one of only three examples recorded, all of which are lacking marginal selvedge. Offered with photocopies showing all known examples. Brandon cert (2009), Spec. N33tb, SG 418var.

GB 1924-26 ½d green, experimental booklet pane of six optd "SPECIMEN" type 29 Spec. N33tb

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Margin Scheme

GB 1924-26 ½d green, experimental booklet pane of six optd "SPECIMEN" type 29 Spec. N33tb

Description