12 gauge Ithaca flues #4 grade barrel weight

[bruce willis]

Hello. I have a 12 gauge ithaca flues #4 grade that is in great condition. It has 30 inch M/F barrels and shoots great. I have noticed that the barrels seem kind of heavy for the gun. I looked up the serial number and it was built in 1910-1911. I wonder if the original owner ordered it as a duck gun. I have also noticed that it has the early fine engraving pattern instead of the later course engraving. The engraving is beautiful. Did ithaca produce different weight barrels like fox did? I have also noticed that most ithaca #4s have ejectors but mine does not. Any thoughts, thanks B Willis.