Priceless to me - any value on the open market?
I'm a somewhat regular poster on the US Coin Forum but this is my first post here. Looking for opinions on this set I inherited from my father many years ago. He was City Manager of our hometown, which also happens to be Carl Sandburg's birthplace. My Dad attended a ceremony for the introduction of the 13 cent stamp in 1978 on the 100th anniversary of Sandburg's birth. He as presented with this set for attending. My father died a year after this ceremony and I have owned this set since.
Just wondering if it has any value outside the sentimental value to our family. I'm no longer young and have no children. Would appreciate any advice: