These images are screen shots from a web site promoting Giardino Design, starring a rather serious looking Bruno Giardino.
I have included screen shots rather than a mere link because the site does not appear to have been updated since 2009, and Bruno seems to have been designing cars since 1965 - so must surely be approaching retirement. I fear the site may soon disappear.
Browse associated derailleurs.
Ofmega Mistral black 1982