One of the rarest francs of Henry of Valois.
The only one with an incorrectly executed reverse legend - without the king's name!
There is a FRAN DEI GRATIA PO REX and an inverted date of 1581(France by God's grace king of Poland), instead of the typical titulature HENRICVS III D G FRAN ET POL REX(Henry III by God's grace king of France and Poland).
The coin is unprecedented in the trade. Known to Edmund Kopicki from only one piece!
In addition, with a very rare provenance. From the collection of Ksawery Segna (a Warsaw banker who lived in 1786-1848), with his collector's punch on the obverse. Provenance dating back to the early 19th century.
Mint of Angers - letter F under the bust.
Silver, diameter 35 mm, weight 11.56 g.