Value is too difficult to be accurate without seeing the gun. Condition which includes the amount of original finish and original configuration will determine value. Recommend taking it to a gun shop for appraisal.
25-200 usd
From completed auctions that i've found with minimal to no use it sells from $1400 to $1500.
AFAIK, Browning never made a model 810.
Pretty much impossible to answer without a detailed description of ALL markings, finish and overall condition
Impossible to answer without a detailed description of all markings, features, box, papers, accessories, etc..
what is the value of a browning sweet 16 no. 51003
Browning never made a Model 51 shotgun.
Browning did not make a Model 11.
It depends on the browning model of shotgun you are asking about,and the condition it is in.
No such model number ever used by Browning.
Browning never made a model 306
No such model name in the Browning line.