TIL: silverpoint pencils use various silver-tin-lead alloys instead of graphite; they were common as unbreakable EDC pocket writing tools. https://en.wikipedia.

TIL: silverpoint pencils use various silver-tin-lead alloys instead of graphite; they were common as unbreakable EDC pocket writing tools. https://en.wikipedia.org/wiki/Silverpoint https://en.wikipedia.org/wiki/Silverpoint