Talking about the 'worth' of collectibles, I like the old example that goes: you have a cup and saucer set with a picture of a black cat on the cup. The set was made in Japan in 1949 and belonged to your grandmother....what is it worth?
To most people: nothing.
To collectors of cup and saucer sets: 1 pound.
To collectors of Japenese c/s sets: 2 pounds.
To collectors of Japanese c/s sets with cats on: 3 pounds.
To collectors of Japanese c/s sets with black cats on: 4 pounds.
To collectors of Japanese c/s sets with black cats on made during the American Occupation: 10 pounds!
To you, it's probably priceless!!