50 000 Intis With segmented foil security thread

Peru's hyperinflationary spiral through the late 1980s pushed denominations skyward at extraordinary speed — the Inti itself had only been introduced in 1985 to replace the Sol at 1,000 to one, yet by 1988 a 50,000-unit note was already insufficient for daily transactions. The segmented foil thread was a notably advanced security feature for a Latin American emission at this date, reflecting De La Rue's push to introduce the technology more broadly after its debut on British sterling notes earlier in the decade.

The Inti was abolished in 1991, replaced by the Nuevo Sol at a rate of one million to one.