320 reales de vellon 1810 coinage

There is a hugh gap in the amount of 320 de reales minted in 1810.
Glenn murray says total 320 reales de vellon A.I. plus R.S for that year were only 323 coins.
Total gold kilograms from the Madrid Mint used that year is 343 kilograms.
That amount is reached by all 80 reales and 320 reales de vellon coinage minted together for that year.
Why is it stated that in 1810 a total 64.000 of the 320 reales de vellon were made?
The same happens in 1812 where only 1224 of the 320 reales were minted but I can see many sites where it is stated 60.000 of these coins were minted?
Can anyone help?
Thank you