Is it worth the investment to restore an antique pistol?

This is my 1935 Mauser C96. It is the pride of my antique firearm collection, but it has little actual collector value because the serial numbers do not match, the inside of the barrel looks like a sewer pipe, and I recently had to replace the rear sight. I enjoy shooting it, but it is not a good shooter in its current condition.

That in mind, I’ve been toying with the idea of having it restored to its former glory. I do like the patina but looking at restored pistols like Lugerman’s impressive example is making me ponder the possibilities.

Questions: Would it be worth the investment to restore this pistol? If so, are there any other options besides Lugerman? Or would I be better off just leaving it with its current patina and character?