These posters are left around the Mist Camp and Vallaki, usually nailed through the top into a tree with a good amount of force. Their text in the trade tongue alphabet, a list of items set below. Above the list there is a large letter "L" with a line through it's upper half.
I, Leon Shelks, seek after a small list of items to purchase if anyone is willing to part with them, I can be found in Dementlieu's capital, Vallaki or the Mist camp and a letter can be sent to the ladies rest or the Hotel in Dementlieu if you wish to notify me you are looking to sell such items.
-Namarra, Rapier.
-Buckler, Luck.
-Holy Symbol.
-Holy Idol.
-Ring of the Rosy Dawn.
-Pair of enchanted plate boots.
-Adamantine Ingots.