For section 139 of the Act of 1868 there shall be substituted the following section—

“139 Detention of barrels with forged etc. marks brought to proof house.

Where a barrel bearing—

(a)

a mark of a forgery or counterfeit of a stamp or part of a stamp which is or at any time was provided or used by either of the Two Companies or which is or at any time was a convention proof mark ; or

(b)

a forged or counterfeit mark or imitation of a mark of any such stamp or part of a stamp,

is brought to the proof house or any branch proof house of either of the Two Companies, the Company shall detain the barrel and any small arm or part of a small arm of which the barrel forms part.”