Exchange coins against pocket calendars

I´m a pocket calendars collector and i´m really interested in having pocket calendars from countries worldwide. I wanna exchange pocket calendars against euro coins.
 
Pocket calendars are cardboard ones, with a little calendar printed on the one side, and on the other, there is printed an image, picture or even publicity.
 
See this link where you can watch what kind of pocket calendars i collect:

http://www.google.es/search?q=imagenes+de+calendarios+de+bolsillo&hl=es&biw=1366&bih=566&prmd=ivns&tbm=isch&tbo=u&source=univ&sa=X&ei=yQFETonuAsefOpSRlKkJ&ved=0CDwQsAQ

Regards.