http://www.greekfontsociety.gr/pages/en ... s19th.html
The Porson Greek font is based on the handwriting of the 18th Century Greek scholar, Richard Porson. From what I have been able to gather, Porson transcribed a handwritten portion of Medea, which was the genesis of this font.
However, after many hours of web crawling, I have been unable to find any scans or images of Porson's actual handwriting, so I humbly turn to the Greek aficionados on this site in the hope that someone will have images or scans of Porson's handwritten transcriptions.
Thanks in advance!