Help with Nino Franchina litho -Romero Gallery  

I recently came across a beautifulabstract expressionist litho from the artist Nino Franchina. I did as much web research as I could. It appears he was more know for his sculpture installations. Unlike the few other two-dimentional works I could find on the web, from Franchina, this one is very beautiful, and colorful. Can anyone help me determine some range of value for this piece? The paper is about 9" x 11" and embossed with the Romero Gallery logo. The image is only about 7" x 5" and orange and red in a biomorphic abstraction. It needs to be de-acidified, but generally in excellent condition