This trade musket is marked " Ketland / & CO" on the lock plates and the concave rib is marked "LONDON". This firm operated in Birmingham, England from just after the Revolutionary War until the death of one of the partners, John Ketland, in 1816. John and Thomas Ketland were the sons of Thomas Ketland and grandsons of William Ketland, who had been making locks and guns for the colonies since the early 18th century. This was originally made as a flintlock and has probably been shortened as early trade guns tended to be longer. No visible Birmingham proof marks at the rear of the barrel. The trigger guard and buttplate are brass. Wooden ramrod with ivory tip. The ramrod tube on the forearm is a replacement.