Those .410 barrels are made for a gun that has:

1 - a Purdey-style sliding underbolt
2 - side clips
3 - Greener-type crossbolt
4 - D&E type forend latch
4 - ejectors

I suspect that they're from a Spanish gun. They're certainly not for any American-made gun. The "Ithaca" markings appear to have been done by a diamond drag, the method employed by most trophy engraving shops.
The stippled rib matting also appears very un-American-made.