I recently picked up a European musket with tack decoration on the buttstock identifying it to William Dow of the 64th Illinois. The item was described by the seller as a Liege musket; it appears to be a copy of the French model 1822 musket, converted to percussion by German gunsmiths in Baden or Wurttemburg. The cone/nipple has been pounded flat and I would like to replace it. Does anyone know the size of this nipple, and a source for an original replacement? Does a period Springfield, Enfield, or French nipple have the same threads? Thanks for any help!