🔫The French double-barrel musket coaching gun is an incredibly rare and valuable firearm.
🎸The customer trades the gun for a vintage Les Paul guitar.
💰The gun is worth around $10,000.
🇫🇷The gun has French origins but was modified in England.
🔍The gun features unique engravings and markings, including the word 'tordu' which means 'twisted barrel' in French.