The original version of the Victorinox Signature Swiss Army knife included a detachable pen rather than a retractable one.

This model is retired. It's a collector's item that sells at a premium price. If you just want a practical knife with similar features, get a modern Signature pocket knife instead.

NOTE-- For a while, this model was called the Signature knife, and the retractable version was called the Signature II. However the modern retractable model is now called the plain old Signature, so we refer to this model as the "original" to avoid confusion.

Signature-- retractable pen