The livre was the currency of Luxembourg

Luxembourg

Luxembourg , officially the Grand Duchy of Luxembourg , is a landlocked country in western Europe, bordered by Belgium, France, and Germany. It has two principal regions: the Oesling in the North as part of the Ardennes massif, and the Gutland in the south...

 until 1795. It was subdivided into 20 sols

Solidus (coin)

The solidus was originally a gold coin issued by the Romans, and a weight measure for gold more generally, corresponding to 4.5 grams.-Roman and Byzantine coinage:...

, each of 4 liards. In the late 18th century, coins were issued in denominations of ½ and 2 liards, 1, 3, 6, 12 and 72 sols, with the lower three denominations in copper, the highest minted in silver and the others in billon

Billon (alloy)

Billon is an alloy of a precious metal with a majority base metal content . It is used chiefly for making coins, medals, and token coins.The word comes from the French bille....

. The last issues of 1795 were 1 sol coins minted during the siege of Luxembourg.