Watch List notes:

Joint Stock Banking Company, Pontefract, (Mess, Barclay, Bevan & Co.), proof for an unissued £20, 18- (1861-62), no serial numbers, uniface, black and white, bank building at left,, (Outing 1726 for type), printed on card, uneven margins, design only with minor foxing, about uncirculated. An Incredibly short lived bank that was only active for 1 year, no banknotes are known before this. A possibly unique Perkins proof.

Estimate: £250 - £350