Can you name the leather pad on this coachman's right lower leg
....and explain what it's for?
7-30-12: Well, no one could name it. John Greenall gets credit for identifying it as a boot guard for a postillion to protect his leg from getting smashed between the pole and the inside of the near horse he was riding on a coaching turnout. Normally, postilions wore big heavy boots. This appears just to be a removable guard.