• How were vintage pens made?
  • How can I tell what a pen is made of?
  • What is celluloid?
  • Casein Pens: Most Aren't (Archive)
  • Solid gold trim
  • Solid gold pens
  • Gold and silver pens and their values
  • Gold marks on pens
  • Gold filled, rolled gold, and gold plated
  • Why are so many American nibs not marked 14K?
  • Repoussé overlays: hand- or machine-made?
  • Early fine (.999) silver overlays