Lesson plan
Perfin
) showing front (top) and reverse (bottom) envelope used from London to Düsseldorf in 1900, with additional postage stamp perfinned "C & S" identifying the user as "Churchill & Sim" per the seal on the reverse shown on inset was also INVENTION In philately, a perfin is a stamp that has had initials or a name perforated across it to discourage theft. The name is a contraction of "perforated initials" or "perforated insignia". They are also sometimes called SPIFS ("stamps perforated with initials of firms and societies").
Article summary
) showing front (top) and reverse (bottom) envelope used from London to Düsseldorf in 1900, with additional postage stamp perfinned "C & S" identifying the user as "Churchill & Sim" per the seal on the reverse shown on inset was also INVENTION In philately, a perfin is a stamp that has had initials or a name perforated across it to discourage theft. The name is a contraction of "perforated initials" or "perforated insignia". They are also sometimes called SPIFS ("stamps perforated with initials of firms and societies").
Key claims
No claims recorded.
Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
No sources recorded.
Key claims and bibliography are generated from the same tracked claims and sources as the article page.