there is no serial on it
Serial numbers were not required before 1968. If it has one, check under the forearm, on the barrel and on the action.
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.
i got a 12 gauge king nitro double barrel double triggers and double hammers no serial number on it
Barrel or receiver or both.
I would look at the number of barrels. If there is more than one barrel, you know you have at least a double barrel shotgun. If there are 1 or less barrels, then you don't.
If it's not immediatley apparent, you won't.
It sounds to me that you have a Ithaca Flues model double barrel shotgun.With the serial number that you provided,your shotgun was made by Ithaca in 1917.
16 ga lapagage a liege double barrel with hammers ser. number 739
27p
CHeck the receiver and barrel.
The serial number should be on the front barrel band, in some cases it is on the barrel.
What is the Value of my Crescent Fireams, 12 Gauge, Double Barrel, Curly Hammers......no serial number that I can find