Banco de Guatemala, a reverse die proof for 50 Quetzales, 2001 Issue, showing an orange layer of print, and an obverse die proof for the 100 Questzales, 1998 Issue, burnt orange print, showing only the top layer of printing, first with engravers annotations and date ‘18.1.19’, uncirculated (2 notes) £80-£100

This is the work of Brian Moore, who was employed many of the great British printing firms over a career spanning half a century. These proofs were for his sections of the note only, and are completely unique.