only if you are trading sovereign government official currency from many years ago where the official minted number is far less than the number known left to exist. otherwise it is bullion. which is worth a variable amount of chickens, which mostly depends on how bad folks want chickens today.
that is why it is called 'spot' price. how much will you pay for a chicken right now, today, on the spot?
the markets think of it as 'discovery' or 'true value'. it is the same for all commodities. it is a pure market. it changes by the moment.
the only exception to this rule is if you want a particular design on your chicken and the person that owns it is willing to part with that chicken, for a price. or else if you are quick and can hit them on the head with a brick and take their chicken before they shoot you. that is how the world works.