Looks genuine to me; I'd use it. The brass pin helping to attach it to the turned wood handle is a detail I've seen frequently on 19th century telescopes. Here's an image showing the two slow motion control rods on my Dollond from ~1830.
in your picture there are some cylinders near the focuser, what are they for? On the wood tube I have it looks like at one time there was something attached near the objective. There are three holes and on the inside you can see the impressions of where square nuts used to be. Any clue what would have been attached there?