I received a swift reply regarding the birth of my grandfather. This was my second attempt. It seems that the IRC's seem to do the trick. Though I did not receive a copy of an original document I did receive the following.
My question, in regards to obtaining italian citizenship, is the document that I received a legal copy of the birth record?
yes, this copy is the legal document to start your citizenship process
it is a birth abstract of your ancestor, stating the names of his parents
it is also on plurilingual format, which is just great
Good luck for your process