What strikes me most about artists like Rubino, some of these that I find while doing research for these posts, is that there are a lot of geniuses that go unknown to the vast majority of humans. I know this lesson from music, but for some reason the point seems more stark in the visual arts.
He seems very much a product of his era; that florid and lovely Art Nouveau style, alive with colour and panache...back when everything was done by hand, and illustrators had to have a huge variety of skills so get a paycheck. What a craftsman.