Here's the HD 2017 Library of Congress restoration of this 1910 Silent film.

I watched the movie for the first time this afternoon.

So, in this version the Frankenstein monster, at the end, becomes entrapped in the full-length mirror, then vanishes into nonexistence upon becoming Dr. Frankenstein's normal reflection. Also, this monster does a fair amount of talking; he's repeatedly saying things to Dr. F, who's horrified/appalled/terrified by him.

I give the film a 5 out of possible max 10 rating. I was tempted to give it a 4, but decided to be generous, taking the limitations and cinematic primitiveness of 1910 into consideration, and being aware that obvious effort was made to be creative.

Here's an interesting Library of Congress blog about the restoration. And here's the informative Wikipedia article about the movie.

Please check out the following list of titles and celebrities I've created TMDb threads for: https://www.themoviedb.org/list/118052