Ithica / Parker Identification

[JeremyBall]

Hello,

I have recently purchased a firearms collection that had multiple Parker's and other classic shotguns. I have requested historical letters on the Parker guns to get some more backstory as this collection came from a very interesting family from the PNW. Within this collection is a Ithica shotgun I'm hoping I can get some help with. The shotgun has multiple things that make me think Parker but I don't know the association and if there is one. Anything you can provide would be greatly helpful. I've attached pictures so hopefully that helps.

Thank you,
Jeremy