A mystery man rushed into Worthing Museum, left two large bin liners full of hats and rushed out again.
The 21 hats include some which will be fine additions to the museum's 20th Century costume gallery.
But staff really need to know more about the hats so that information about them can be given when they are displayed.
The donor should come forward and not be shy about his generous gift. If the cap fits, wear it.
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