Sample letters included notes of appreciation to fellow students ... It had lost half of its market value, and sales were in decline. Morale was at an all-time low. He set about fixing that ...

Serial Numbers and Special Features As mentioned earlier, the value of an old 5 rupee note depends only on its serial number ...

Zimbabwe's central bank allowed its citizens to exchange the country's almost worthless currency for US dollars. Its 100-trillion-dollar note is worth just 40 U.S. cents.