5000 Lira

By 1990, Turkish inflation had been running at triple-digit annual rates for years, and the 5,000 Lira note — worth roughly a dollar at issue — was already being outpaced before it left the press. The Central Bank's own printing facility in Ankara had been churning through ever-higher denominations since the late 1970s, a treadmill that would eventually produce the 10,000,000 Lira note before the 2005 redenomination wiped six zeroes from the currency entirely.

Pick 198 belongs to the seventh emission series. The sole listed security feature is a watermark — modest protection for a denomination that hyperinflation rendered obsolete within months of release.