Towards the end of the century gold began to become scarce and rise in value. The French Revolution and the subsequent French Revolutionary Wars had drained gold reserves and people started hoarding coins. Parliament passed a law making banknotes legal tender in any amount, and in 1799 the production of guineas was halted, although half- and third-guineas continued to be struck. Following the Act of Union between Great Britain and Ireland in 1800, the king's titles changed, and an Order in Council of 5 November 1800 directed the Master of the Mint to prepare a new coinage, but although designs were prepared, the production of guineas was not authorised. In 1813 it was necessary to strike 80,000 guineas to pay the Duke of Wellington's army in the Pyrenees, as the local people would accept only gold in payment. This issue has become known as the "Military Guinea". At this time, gold was still scarce and the guinea was trading on the open market for 27 shillings in paper money, so the coining of this issue for the army's special needs was a poor deal for the government, and this was the last issue of guineas to be minted. The reverse of the military guinea is a unique design, showing a crowned shield within a Garter, with on the Garter, and ("King of the Britains, Defender of the Faith") around the edge, and "1813" between the edge inscription and the garter. In the Great Recoinage of 1816, the guinea was replaced by the pound as the major unit of currency, and in coinage by the sovereign. Even after the guinea coin ceased to circulate, the name "guinea" was long used to indicate an amount of 21 shillings (£1.05 in decimalised currency). The guinea had an aristocratic overtone, so professional fees, and prices of land, horses, art, bespoke tailoring, furniture, white goods and other "luxury" items were often quoted in guineas until a couple of years after decimalisation in 1971. The guinea was used in a similar way in Australia until that country converted to decimal currency in 1966, after which it became worth A$2.10. It is still quoted in the pricing and sale of racehorses at auction, but not livestock, at which the purchaser will pay in guineas but the seller will receive payment in an equal number of pounds. The difference (5p in each guinea) is traditionally the auctioneer's commission (which thus, effectively, amounts to 5% on top of the sales price free from commission).