Looks basically original to me.
Some Birdseye in the maple is just dumb luck, like some have some tiger striping. It's not an outstanding piece of Birdseye.
The shaft splices were common.
Joint looks OEM to me.
The joint was an early red flag for me. Why have a piloted joint and the other construction gives the joint no room to self align. The thread of the wrap looks oversized and soft. It doesn't look like it has ever been ironed. The wood looks like it has been turned the wrong direction from an original build.
The weight stamped into the wood seems odd for a nice cue, and the weight seems like it doesn't fit the stick. Nineteen ounces isn't likely to be perceived as light by most people.
It looks like something that was put together to give a grandson to play with. Nothing wrong with that but it reminds me of some experiments of mine that never met the light of day!
If the cue plays fine I would play with it, if not it gets a place of honor in the rack. It will never be a collectors item but may have a lot of personal value.
Hu