Red Bank of Ireland £20 ‘specimen’ note from the famous Ploughman series – £42,000 at Dix Noonan Webb.

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These were issued by the Currency Commission of Ireland as a transitional measure for eight Irish banks between May and June 1929 with most redeemed and destroyed. A handful of ‘not for circulation’ specimens are the only £20 notes available to commerce today.

Estimated at £2600-3200, the example in orange sold at £3400 while the one in red was competed to a remarkable £42,000.