I have a fredrix #20 painting that's over 20 years old I wish to sell the painting it was valued at $666.66 dollars at that time an was to increase I value 75% every year there after. By my caculations its worth a lot money now

I don't recognize the artist, but that doesn't mean he didn't exist. You mention a painting but you also say #20. Is this a numbered and signed print?

Who valued it at $600 twenty years ago, and art historian, someone with a gallery?