If it is a double, remove barrel and you will see it along with serial #.
The Lefever was mfg. in 1935.
Requires professional appraisal.
Turn of the century.
Blue Book of Gun Values
The shotguns were manufactured by Ithaca from 1921 through 1947. Yours was manufactured in 1928.
With the serial number that you provided,your Ithaca double barrel shotgun with the damascus barrels was produced in the year 1900.
Made in 1904. Value depends on grade and condition.
Ithaca Firearms manufactured the Lefever Nitro Special shotgun with serial numbers between 101600 and 119899 in 1922.