1930's Knickerbocker Dopey Doll

When I was sixteen I found this doll in a brown paper bag between the floor joists in my great-aunt's attic. My aunt said she bought it for her daughter but the daughter hated it and shoved it in the bag and hid it in the attic.  She gave it to me and it's been in my mother's curio cabinet ever since 1992.  It has absolutely no damage to the body or clothing, other than being a bit dirty from being under floor boards for 60 years. 

I am very interested in what the doll could be worth.  I currently have no plans on selling it, but I've been told that it may be a good idea to have it insured.  Any and all information will be appreciated.

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