Hello im new here and have a side by side percussion cap shotgun (dual trigger) I have no idea the value or manufacturer of this gun. Under the barrel , the only markings i have found is a circle with the letters "EG" stamped inside. The circle is about the size of a pencil eraser. Also on the top of the barrel is etched "Fine Twist" Does anyone have any idea about this guns value and Manufacturer? Thank you. My email is - "firstname.lastname@example.org"