Jim,
That finish in the receiver is called Antiqued case color. Not to be confused with real case coloring which is beautiful. It's not a trap door but rather a loading gate. On these rifles it may actually be gold plated. But I would have to dig deeper to be sure.
These modern rifles finished in this manner do list for slightly higher values than a generic Model 94 without the ring and with blued receivers. I have seen them for $650 to $750 if the stock is checkered as in the photo.
Jim, you are correct about the name engraving on yours. Unless that person ended up being famous it hurts the value. And you would have to prove the rifle
was his. Not just some old rifle with his name on it.
2bit