A 16 bore L C Smith or Fox Sterlingworth will go for $700 to $1800, the Bayard is more likely in the $400 to $800 range.. Bayard was a product if Pieper, Most of their guns sent to the U S were mid quality,, Sleeving runs in excess of $1200, and the finished gun would likely bring less than $1000 ,, It's hard to date the gun but probably 1900 to 1930 ..Bushrod