British and Irish Banknotes

Bank of England, Chris Salmon, a sheet of thirty-five £50, 2010 (2011), prefixes AB01-AB35, matching serial number 997777, evidence of handling at edges of sheet thus about uncirculated to uncirculated, a rather impressive sheet and one of only two sheets ever made available, rare! (35 notes, 1 sheet)
EPM B410 £3,000-£4,000