Look Mid Century Brazilian designer help. Carlo B. Fongaro  

I recently picked up a set of 6 chairs (4 small 2 large). These chairs have a label that says. DINAMARQUESA PROBJETO CARLO B. FONGARO. I can find the small chair on 1st Dibs but I have been unable to find the large chair. I haven't been able to find out much information on Probjeto or the designer Fongaro. I was able to find info that eames and other designers allowed Probjeto to produce their designs just like vitra. If anybody has any info it would be much appreciated. Thanks