Here's how the brass pens' patina look different from expo…

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Brass Pens - Everything You Needed to Know - Goldspot Pens

This pen is raw metal brass with no coating to protect it from oxidation., Oxidation forms a patina on the pen, which is a primary reason buyer's like

Kraken's Keepsake Brass Patina - Bolt Action Pen by Bastion®

Scrapbook Papercraft & Art Expo Preview Magazine by Expertise

Kaweco Brass Sport Patina After Two Weeks. : r/fountainpens

here - Material Strategies

Machine Era Brass Pen Forced Patina

Brass Pens - Everything You Needed to Know - Goldspot Pens

TPN Ep.8 Before You Buy a Brass or Copper Pen

Pens & Pencils All Things Brass

Unlock the Hidden Beauty of High-Quality Brass Fountain Pens: A