Standard Bank of British South Africa Limited, obverse and reverse die proofs on card for £10, 18- (1870’s), with red Waterlow specimen overprints, obverse black, reverse pink fading to brown, some minimal foxing, about uncirculated and very rare (2 notes)
Pick S581 £1000-1500

The reverse of this pair of die proofs features two tone colouration, which the cataloguer has never seen on a die proof of any age, country or printer until now.