England's royal coat of arms, 1638 
HONI SOIT QVI MAL Y PENSE   
❧ By the King.  
¶ A Proclamation concerning Tin, and to restrain the Importation thereof from foreign parts.  
WHereas for the better securing to Us the preemption of the Tin of this Kingdom, being an ancient and undoubted hereditary Revenue annexed to Our Crown in right of Our Duchy of Cornwall, divers good Customs, laws and ordinances by the wisdom of former times have been established, amongst which it is specially provided, That all the said tin should be duly brought to Our coinage Houses in Our Counties of Devon and Cornwall, there to be Tried, Assayed, Prized and Sealed, before the same be put to sale within the land, or offered to be shipped for foreign vent; And howsoever by Our Proclamation of the two and twentieth of january, in the ninth year of Our Reign, Wee required of Our Subjects a just observation of those ordinances; Yet finding that by secret practise and combination of sundry ill minded owners, and workmen of the said Tin and Tin-works, a great part of the said tin hath been, and still is bought and sold, received, delivered, and carried away uncoyned, as well in ships and other vessels( which under colour of coming to buy Cornish state and ston, and such like occasions upon the cost of Cornwall, do imbezill much uncoyned Tin in Blocks) as also by Mariners and Sea-faring men, who buy up the Tin in bars commonly called pocket tin, of blowers and melters of Tin, and others, contrary to the ancient ordinances of Our Stannaries, to Our prejudice and wrong in Our said Revenue, and disgracing of the commodity, and abuse of Our Subjects buying the same untried, and not assayed; For reformation of which disorders and abuses for the time to come, We have thought fit once more to declare Our royal pleasure in the premises, wherein as Wee expect all due conformity and obedience, so Wee shall extend the rigour of Our laws, and all just severity against such as shall hereafter offend therein.  
And therefore Wee do by these presents straitly charge& command, as well all and singular Our loving Subjects, as all other person& persons whatsoever, that none of them presume upon any colour, shift, or pretence whatsoever, at any time or times hereafter to utter, sell, deliver, or put to sale, or to receive, ship, carry, land, or contract for any Block Tin unblown, but such as cause the same to be Cast, Melted down, and Blown, and brought to the place of coinage before it be sold for use, nor to sell, give, barter, or utter any White Tin or Cast Tin, before it be first coined and stamped with Our Seal or mark appointed for that purpose, as aforesaid.  
And that no person or persons whatsoever, other then Our farmers of the said Tin, do from henceforth presume to ship or lad any Tin, of what kind soever to be transported or carried out of this Our Realm or Dominion to any foreign parts, without the assent of Our said Tin-Farmers, therein first had in writing, under the pain of the loss and forfeiture as well of the said Tin, as also of confiscation of the Ships, Hoys, barks, Lighters, and other vessels wherein any such prohibited Tin shall be shipped or laden for transportation contrary to the intendment of this Our Proclamation, and also upon pain of Our high displeasure, and of such further penalties, forfeitures and punishments, as by the Statutes and Ordinances of Our said Stannaries, or any other Law or Statute whatsoever, or by the Censure of Our high Court of Star-chamber, for disobeying this Our royal Commandment and Injunction, or otherwise may be inflicted upon the offenders in this behalf.  
And where We have lately granted to some of Our loving Subjects the emption or preemption of Tin, during a term unexpired, and for relief of poor Pewterers of the city of London, have provided, That if the said Lessees or Farmers shall be minded to transport any Tin in Bars, they shal employ the said Pewterers of London, or some such of them whom Our said Farmers shall nominate, for the casting of Tin out of Blocks into Bars, at such places as We shall appoint: And in default of such appointment at such places as Our said Farmers shall appoint; sithence which time many have presumed to cast Tin into Bars, both in the Counties of Cornwall and Devon, and elsewhere, which is a means that a great part thereof is the more easily conveyed from place to place, and vented before the coinage of the same. And also divers Pewterers of London who have not been authorised by Our said Farmers, have( contrary to Our agreement with them) presumed to cast Tin into Bars, and others then our Farmers have by means thereof opportunity to transport the same contrary to Our Covenants with Our said Tin-Farmers. Wee do therefore straitly charge and command all person and persons whatsoever, that none of them( other then such of the Pewterers of Our City of London, as shall be nominated by the Farmers of the emption or preemption of Tin for the time being) do presume hereafter to cast any Tin into Bars, and that none of them do cast any Tin into Bars, but in the city of London; And that onely in such houses and places of melting, as shall be designed or allowed of by Our said Farmers, upon the pains to be inflicted upon contemners of Our commands, in Our Court of Star-chamber, and otherwise.  
And Wee do further hereby straightly charge and command, That no Merchants, Mariners, or other person or persons whatsoever, do hereafter import, convey, or bring, or cause to be imported, conveyed, or brought into our Realm of England, and Dominion of Wales, or either of them, any Tin of what kind soever from any the parts beyond the Seas, upon pain of the loss and forfeiture, as well of the said Tin, as of the ships or vessels wherein the same shall be shipped or conveyed; and upon such further penalties, and punishments as shall be meet for such contempt, or neglect of Our royal commands.  
And lastly, We do require and command, That Our said Proclamation formerly published concerning Tin, be hereafter duly observed in all the particular Branches and parts thereof, under the pains and penalties therein expressed.  
Given at Our Palace of Westminster, the nineteenth day of February, in the fourteenth year of Our Reign.  
God save the King.   

Imprinted at London by Robert Barker, Printer to the Kings most Excellent majesty: And by the assigns of JOHN BILL. 1638.