Heres how the brass pens patina look different from exposing to different environment. Fountain pen is kind of reddish it is us…

Copper Pens: The Future is Bright

these beautiful pens: 2012

Why do people have favorite pens? - Quora

Custom Writing Instruments Made in Florida Artisan Made Write Turnz

Bullet Pen Manufactum, space pen

Hirota Urushi - Kinpaku Maki-e - Tsubaki Fountain Pen

Here are various states of patina in bronze, copper, and brass in their naked splendor. : r/machinedpens

Copper Pens: The Future is Bright

The Pen Addict

The Gentleman Stationer

Brass Fisher with some nice patina : r/pens