Its everchanging.
A pound of gold and a pound of cotton weigh the same because they both weigh one pound. The difference lies in their volume and value, as gold is much denser and more valuable than cotton.
Since the value of gold is by weight 1 lb of gold is worth more than 1/2 lb of gold by definition. The fact that there are more coins is irrelevant.
Pepper was so valuable at one point in history, that one pound of pepper was equivalent in value to one pound of gold.
Precious Metals like Gold, Silver, Platinum are measured in Troy Pounds (12 ounces per pound), while other materials (like cotton) are measured in the standard scale (16 ounces per pound), Therefore the a pound of cotton weighs 4 ounces more than a pound of gold.
Take a look at the website demonocracy.info/infographics/world/gold/gold.html
A pound of gold is worth more than half a pound of gold.
Gold is a valuable mineral
Gold is valuable because it is rare, durable, pretty and extremely useful.
A 1889 gold 5 pound coin is worth 5 pounds of gold, while a 1889 2 pound gold coin is only worth 2 pounds of gold.
A pound of steel.
Rhodium and platinum are both more valuable than gold.
yes titanium is about $6 a pound and gold is about $14,821.44 a pound