The silencer supposedly found by David Boutflour on 10th August 1985, never came into the possession of DCI Jones - the only persons who had involvement with the Boutflour silencer were the relatives, DS Jones, PI Miller, DI Cook, Glynis Howard, John Hayward and Malcolm Fletcher...
Yet...
What about the silencer kept by Taff Jones on his desk, seized by PC Whiddon, sent to the lab' to be checked for blood and fibers, and fingerprinted by DS Davidson and his side kick on 14th September 1985...
The Boutflour silencer, and the Taff Jones one were not the same silencer...