No data known- sorry. Essex has been gone for a long time, and there is not a very high collectors demand- which is what drives gathering info on production data, etc. Sorry-
$100-$250, depending on condition.
The current Barrett Firearms does not make a double shotgun. Exactly how is your gun marked?
25-150 usd
I've got one!
I believe that the Plymouth side by sides were made by Cresent Firearms.
The exact value of a Davidson firearms 16 gauge double barrel model 63 is actually dependent upon a number of factors. Some of these factors would be the condition and age of the firearm.
50-100 USD or so
Less than $200.
Seldom go beyond 150 USD
1890's.
Made by Crescent firearms.
The Essex trade name was used by Belknap Hardware of Louisville, KY. A double barrel was probably made by Crescent Fire Arms Co c. 1893-1930.