Nichols & Stone Windsor Rocking Chair

This Nichols & Stone rocking chair was just purchased at a yard sale in our neighborhood.  We were just curious as to the date it was made and an estimate as to it's value.  It is in very good condition.  I'm guessing from the orange label on the bottom with "936-020" faintly written in pencil, it may have been made in September of 1936 with the "020" possibly meaning the finish used on it.  Again, that is just my guess.  Any info on this chair would be greatly appreciated.  I found the company's history on Google and know it was made after 1900 since the brand states it was made in Gardner, Massachusetts and it's a "Nichols & Stone", but I don't know where to look to find an old catalog containing this chair.   Thank you.