Showed it to a friend of mine who didn't know it was a typewriter part; he thought it was a bottle opener

I forgot to mention, if you want to see the part, there is a pic on typewriter database, 1903 Fox 3 #6637

I inherited two rifles and a gunsmith's tool set including about 20 screwdrivers from my grandfather. He was into black powder hunting andand I cant say how much those have saved me, I also mess around with Sturmey Archer stuff and all of the accessories and parts had this weird slot that I never could find a screwdriver to fit. Its easy to wreck them and every three speed bike I work in has the screw slots destroyed. Every single screw and other part used by Raleigh, including S-A, was made in the in Nottingham works complex. Maybe they had proprietary screwdrivers, too. I never could find a screwdriver to fit those screws until I got that gunsmithing kit. Also, since I posted that (I should probably delete it) I've learned a lot. I've been deep into a few of my machines since then, successfully rectified all kinds if trouble with my Noiseless, and am working on the Fox.
  What I was specifically looking for was a repair manual for the Underwood 3. I've not found one, but I don't need to, the Underwood 5 is almost identical except for the carriage. There are several manuals available online for the #5, and there was little difference between those Underwoods and later models (with exceptions) so I've found all I need for that.
  I never had time for anything besides modest repairs and cleaning, I've used typewriters my whole life, but I've not had to work since November, and have had time to indulge in the hobby. The know-how grows almost exponentially-- every time I fix one component, I know how to do it on every other machine. So in a way, actually exponentially.
  In the last few months i've met a few of the serious typewriter people out there, especially concerning my Fox, and its been nice that everybody's been so helpful. Except for the WD40 vs PB'laster comment which was know-it-all nonsense and not what I was asking. MSDS? Whatever. I'm referring to a post, which was about the PRACTICAL difference between the two. I've seen a lot of discussion on this but

There is one for sale near me. I'm not interested but I'm sure somebody will be. Seller wants $550

I put all the pics up on TWDB. I'm discovering more bits are missing. I'll have to find those...