Louis is in Coins.

Memoirs of Count Grammont by Anthony Hamilton Chapter 7. The Chevalier de Grammont had given orders that fifteen hundred louis should be expended upon it; but the Duke of Guise, who was his friend, to oblige him, laid out two thousand. All the court was in admiration at the magnificence of the present; and the king, charmed with the Chevalier’s attention to everything which could afford him pleasure, failed not to acknowledge it: he would not, however, accept a present of so much value, but upon condition that the Chevalier should not refuse another from him.