I was asked to look at a friend's small collection and see what I could repair, there was a Skyline, Parker 21, and a few modern pens that needed a soak and this...
"granny's old pen". It's out of my range of knowledge but what I can tell is eyedropper, intact Lucky Curve feed, two deep chased gold bands, flexy stub nib, "6" in a circle at the end of the barrel, good color and chasing. Maybe a "6L"?
I told her to keep it out of the light and the section may need a soak to clean it out. Didn't take it with me. I asked if she had ever written with it, "no". So we dipped it, wrote with it, rinsed and put it away to dry.
I said she needs to baby it because it's a very old and relatively valuable pen, was I pretty accurate? Apologies for the lousy photos.