I had another customer ahead of you that I was obligated to answer first.
When assessing an artist's work, appraisers must look at completed sales of works by the same artist. Art gallery sales prices are private.
We must then go to auction sales prices which are public. When using comparable work by the same artist, medium, subject matter and size are factors to be considered.
Appraisers most often use price per square inch of previously sold comparable works by the same artist as a measure of value.
This is the widely accepted method of appraisal.
I need size and subject matter to give you an accurate answer.
There are thousands of differences in Norman Rockwell values depending on these factors.
I cannot give you an accurate answer without knowing these two factors.
Can you call your family that has the art you are asking about?
If so, I would be happy to give you the accurate answer you deserve.
There is no hurry.
If another professional enters our exchanges, feel free to tell them that you are working with me if you wish.