Not possible to comment on the quality of the gun in question without a lot more detail and a few photos .
Had the pleasure of knowing Mr King as all us young'uns called him ,I even did a little work for him .He was highly regarded in the Birmingham trade and his opinions were taken seriously .
It was my understanding that the majority of guns produced under the King name were exported to Africa through contacts gained in his days with the Midland gun Co who traded in many goods from places like Africa in the colonial days .