4 ways to get it.
1. You meet a child who delivers a letter in Beauclare give him a tip.
2. You meet a shoeshine boy who demands 500 coins do not negotiate the price give it to him.
3. You encounter count Boriesa di Salvaressa who will ask you not to kill the silver basilisk agree & later Geralt meets a group of Reavers convince them to giveup hunting the silver basilisk and speak with count again. You must refuse his reward and tell him to give the gold to the families of murdered merchants.
4. In the side quest A Picture of the Witcher as an Old Man in which Geralt has his portrait created. You must complete the whole quest. Once it is done, meet with the painter on the market in Beauclair & buy it for his outrageous price of 1000 crowns.
