Vintage Women's Dress Hats

I have 9 very nice vintage women's dress hats in excellent condition,
and 4 hat boxes. I'm helping my cousin, an 87 year old Southern lady
from St. Simons Island, Georgia, declutter her island home. These
hats have been taking up closet space for many, many years, unused. I
have no idea how old they are. Could be 50's or 60's.
These hats were purchased from Altman's Feminine Apparel, Brunswick,
GA.
I'm looking for suggestions on the best way to sell these hats. Any
alternatives to eBay? Any collectors here interested in the entire
collection?
Pictures available on request.
Shipping from St. Simons Island, Georgia 31522.