So when I looked at this pen with the name "Baldwin" on the clip, I had to have it.
Unlike the others from the same era made in US, this one is a button-filler and it's rather interesting that the button filler assembly is all chrome-colored metal, unlike the brass and celluloid combo such as found on Parker Duofold or Challenger.
Aside from the super boring GP nib, this pen has a lot of charm. I upgraded the nib with a Parker Lucky Curve nib I have in my collection.
The name Baldwin immediately reminded me of Baldwin pianos. So I attempted to sketch a vintage one from the 1900.