1000 Francs Persepolis

Chad issued a series of world wonder and ancient site silver pieces in the late 1990s primarily for the collector export market — pieces that never circulated domestically and were sold through European distributors. Persepolis, the Achaemenid ceremonial capital burned by Alexander the Great in 330 BC, appears on numerous such issues from African nations with no historical connection to the site.

Schön 18 places this squarely within that collector-commodity category.