What do you think this is? Clue: It’s not about pens though it came to me in a batch of pens. The lucky winner will get a Pilot Parallel Calligraphy Pen.
***Edited to add*** We have a winner! This is a universal watch winder, circa 1840. I have enjoyed all of your guesses!
Goodwriterspens's Blog 
Is it a winder for an old-style pocket/fob watch?
You got it! Email me your address for your pen. goodwriters@btinternet.com
A lead holder?
Good guess but it’s actually nothing to do with writing.
Vintage roach clip? 😂
Now there’s a good idea! Sadly no, it’s not that.
Eyebrow tweezers!
That would work. But no.
Hello Deb
It looks like what I would call a hand drill or multi tool. With a variety of different drill/driver heads stored in the barrel?
It does look like that, doesn’t it? But no, I’m afraid that’s not it.
Googling John S. Birch leads fairly quickly to parents for improvement to watch winding keys – I see someone beat me to it though. Enjoy the pen.
What ever did we do before Google? I did the same thing when I saw John S. Birch on the watch winder, as well.
Well done!
Looks like a clutch pencil similar to a modern Mars Staedler.
Peter
That’s what I thought when I saw it first, but no. See edit to post.
a watch key.
Correct but too late, I’m afraid