Reproduction prints from Andrew Wyeth and Pierre-Auguste Renoir

I am contacting you from Australia.  I'm sure you get asked all the time about the value of paintings/prints, well here is another one.

Renoir's Portrait of Two Young GIrls

Renoir's Portrait of Two Young GIrls

I have had this picture for years and just noticed on the back a sticker which reads RENOIR - PORTRAIT DE DEUX FILLETTES Collection J. Walter - P. Guillaume Paris. I have attached images. Can you tell me what the value is and how I would sell them?

sign on back.jpg

I'm not sure of the Australian art market but, unless you recently stole this artwork from the Musee de l'Orangerie in Paris, you have reproductions.  

Paul Guillame (1891-1934) was an influential and highly successful Parisian art dealer.   He embraced Impressionism and was one of the first in France to exhibit both African sculpture and Cubist painting.  During his short lifetime he amassed a group of several hundred works by living artists with the intention of forming a museum.  He died before he could realize his dream. 

His widow Domenica married architect Jean Walter.  Together they sold some pieces, bought others and refined the collection to represent French art from 1860 through 1930.  After Jean Walter’s death, Domenica gifted the collection with the understanding that it would be named for both of her late husbands.    The French State housed the collection in Musee de L’Orangerie.

J. Walter - P. Guillaume collection tag 

J. Walter - P. Guillaume collection tag 

I have an Andrew Wyeth Young America picture, framed, that I purchased at an antiques mall in Michigan approximately 10 years ago. I'd like to know if it's worth anything. 

Andrew Wyeth (1917-2009) is a beloved American artist.  President John F. Kennedy awarded him the Presidential Medal of Freedom in 1963; in 1990 Wyeth received the Congressional Medal of Honor.  In 2017, the United States Postal Service honored Wyeth by issuing a sheet of postage stamp bearing 12 of his paintings. 

Andrew Wyeth's Young America hangs in the Pennsylvania Academy of Art - But you can buy the image as a postage stamp!

Andrew Wyeth's Young America hangs in the Pennsylvania Academy of Art - But you can buy the image as a postage stamp!

Young America, a realistic yet dreamy portrait of a Young Man on a bicycle, was painted in 1950.  It currently hangs in the Pennsylvania Academy of Fine Arts.  Signed limited edition prints can sell in the low hundreds; mechanically produced posters bring much less. 

If you have a signed collotype print it will sell in the $1000-1500 range; an offset lithograph will sell for $100-150.00.  You’d have to remove it from the frame to be sure.