NEWMAN DECOR PICTURE BY SUE

WE HAVE A NEWMAN DECOR WATERCOLOR BY SUE. IT HAS A VASE OF WHITE FLOWERS SITTING ON A TABLE WITH A DRAPE BEHIND IT. IT HAS THE LABEL ON THE BACK AND NUMBERED#1250 .ALSO IT IS SIGNED "SUE"ON THE PICTURE ITSELF. WE WOULD LIKE TO KNOW ANY INFO AND A VALUE. IF WE TAKE OFF THE ORIGINAL PAPER BACKING WOULD IT DECREASE THE VALUE. ALSO WOULD WE FIND MORE INFOR UNDERNEATH THE BACKING. THANKS FOR ANY HELP YOU CAN GIVE US.---JILL