Mount and blade warband serial key yahoo. Jun 06, 2013 Can someone please send me his Warband serial key into pm.I have the game but my friend lost it. Now i only have classic Mount & Blade.If someone can send it,i will give him my own Mount and Blade serial.I try almost every key from the internet but noone works. It doesn't work for games you download (eg. Roblox, Trove, etc.) That was the who..