If we had a manufacturer's name and model name or number we might be able to answer you.
Try the receiver, barrel, forend
It's on the barrel under the forend. You'll have to remove the forend.
Remove the forend, then the barrel. The serial number will be on the underneith side of the bottom barrel at the point where it hinges with the rear stock. You may need a magnifying glass.
To identify the serial number on a Boito shotgun, first examine the receiver, as it is typically where the serial number is located. Look for a series of numbers and possibly letters stamped or engraved onto the metal surface. In some models, the serial number may also be found on the barrel or under the forend. If you have difficulty finding it, consult the owner's manual or contact the manufacturer for guidance.
By designer are you asking what Model it is? If so, the Model can be determined by the serial number, which is located on the barrel flats and the forend. You have to take the barrel off the receiver to see them.
What year is a Parker Shotgun Serial number 126212
The serial number to a browning shotgun made in the year 1989 will have the letters PN found some where in the serial number.
price value of browning shotgun serial number 35354
wondering price value of browning shotgun serial number 35354
Your serial number indicates that your Ithaca shotgun was made in the year 1920.
Impossible to value with just the serial number and "shotgun".
with a serial number of E261611