Need Help on Vitalis Beer label

Hi all,

I am new to the forum having just found it while searching for information on Vitalis Beer produced by the Du Bois Brewing company.

I recently came into the posession of a collection of Du bois breweriana, included were invoices, statements labels and a bunch of other stuff. But tucked inside were two bottle labels in an envelope marked "Very Rare Dubois labels"
One of these labels was a Vitalis Beer label and I can't find any information whatsoever on this beer.

Would anyone have any knowledge of the particular beer or an idea of the value of such a label?
Any help would be very much appreciated.

Thanks