Source for modern Cuban Notes

Hi !

I am Christian from Italy, IBNS #8801 ( www.ibns.it ), author of the
web site
www.papermoney.too.it

I am looking for the following banknotes issued by the Central Bank
of Cuba:

1 peso regular issue 2002 (or post 2002)
1 peso commemorative issue 2003
20 pesos regular issue 1997 (or post 1997)
20 pesos commemorative issue 2003
50 pesos regular issue 1997 (or post 1997)
100 pesos commemorative issue 2000
100 pesos regular issue 2002 (or post 2002)

I have also a question:
Do you know where is produced the paper of the present banknotes and
where are
they printed ?

Can you explain me -in brief- the difference between peso & peso
convertible?

Thank you very much in advance for your help.
Christian Costamagna

Italy