12. Every person who places upon or joins or affixes to any barrel any such mark or part of a mark so cut or severed: 13. Every person who, with intent to defraud, uses any genuine stamp already or hereafter provided or used by either of the two companies for the marking of any barrel: 14. Every person who forges or counterfeits, or by any means produces an imitation upon any barrel of any mark, or of any part of any mark, of any stamp of a foreign country registered by the two companies pursuant to the provisions of this Act. C. Every person committing any of the following offences shall for every such offence be subject to a penalty as follows, to wit: 1. Every person selling or exchanging, or exposing or keeping for sale, or exporting or importing, or attempting to export or import from or to England, or having in his possession without lawful excuse (the proof whereof shall lie upon him), any barrel having thereupon any mark of any forged or counterfeit stamp or part of a stamp already or hereafter provided or used by either of the two companies for marking any barrel, or having thereupon any forged or counterfeit mark or imitation of a mark of any stamp or part of a stamp so provided or used, or having thereupon any mark of any stamp or part of a stamp so provided or used, such mark having been transposed or removed thereto from any other barrel, shall for every such barrel so sold or exchanged, or exposed or kept for sale, or exported or imported, or attempted to be exported or imported, or so in his possession, forfeit not exceeding twenty pounds: 2. Every person selling or exchanging or exposing or keeping for sale, or exporting or attempting to export from England, any small arm, the barrel or barrels whereof are not under this Act duly proved and marked as proved, shall for every such barrel forfeit not exceeding twenty pounds: 3. Every person fraudulently erasing, obliterating, or defacing, or fraudulently causing to be erased, obliterated, or defaced from any barrel, any mark or any part of any mark of any stamp already or hereafter provided or used by either of the two companies for the marking of barrels, shall for every such offence forfeit not exceeding twenty pounds: