First, You are obliged to take all money in payments which is coined by the King and is of the English standard or weight, provided it be of gold or silver.

Secondly, You are not obliged to take any money which is not of gold or silver, no not the halfpence, or farthings of England, or of any other country, and it is only for convenience, or ease, that you are content to take them, because the custom of coining silver halfpence and farthings hath long been left off, I will suppose on account of their being subject to be lost.

Walpole and Chatham (1714-1760) — Part 25

Thirdly, Much less are you obliged to take those vile halfpence of that same Wood, by which you must lose almost eleven-pence in every shilling.

Walpole and Chatham (1714-1760) — Part 25

Therefore my friends, stand to it one and all, refuse this filthy trash. It is no treason to rebel against Mr. Wood. His Majesty in his patent obliges nobody to take these halfpence,[5] our gracious prince hath no so ill advisers about him; or if he had, yet you see the laws have not left it in the King's power, to force us to take any coin but what is lawful, of right standard gold and silver; therefore you have nothing to fear.

Walpole and Chatham (1714-1760) — Part 25

And let me in the next place apply myself particularly to you who are the poor sort of tradesmen. Perhaps you may think you will not be so great losers as the rich, if these halfpence should pass, because you seldom see any silver, and your customers come to your shops or stalls with nothing but brass, which you likewise find hard to be got. But you may take my word, whenever this money gains footing among you, you will be utterly undone; if you carry these halfpence to a shop for tobacco or brandy, or any other thing you want, the shopkeeper will advance his goods accordingly, or else he must break, and leave the key under the door. Do you think I will sell you a yard of tenpenny stuff for twenty of Mr. Wood's halfpence? No, not under two hundred at least, neither will I be at the trouble of counting, but weigh them in a lump. I will tell you one thing further, that if Mr. Wood's project should take, it will ruin even our beggars; for when I give a beggar an halfpenny, it will quench his thirst, or go a good way to fill his belly, but the twelfth part of a halfpenny will do him no more service than if I should give him three pins out of my sleeve.