The National Unity Government (NUG) says it's raised $6.3 million on the opening day of its inaugural bonds sale, aimed at generating funds for toppling the ruling military junta, according to Australian Associated Press.

The NUG said bonds went on sale on Monday to mainly Myanmar nationals overseas in denominations of $100, $500, $1,000 and $5,000, with two-year tenures.

Even though the bonds will generate no interest income for buyers, $3 million worth were sold in the first three hours, the NUG said, increasing to $6.3 million by the end of the day. Its overall target is $1 billion.