Question about artist and value of piece

I recently went to an auction and aquired a couple of pieces of art I know nothing about. I can tell they're originals, with the artist signature. The artist name is P. Denis. I looked online and found that I have to spend money to have the art appraised and I don't have the means to do that,so I was wondering if anyone was familiar with this artist or even possibly what the value of this art may be as I want to make an intelligent decision in regard to whether I should attempt to sell it or hold onto it. I have no idea ANYTHING about this artist. WHAT I DO KNOW-The piece is in ink/watercolor. It is an original on paper and has the artist's signature. I can provide a photo if needed as I am not familiar with much art. Any help would be greatly appreciated!