Danegeld, or any Anglo-Saxon or Norman land tax often based on hides
Gunnar Heinsohn and Otto Steiger in their book "Eigentum, Zins und Geld" developed a theory called "Property Theory of Money", which also explains money by endogenous processes.
Geld oder Leben! ("Your Money or Your Life!") is an album by the Austrian band Erste Allgemeine Verunsicherung.
Hans Leyendecker, Heribert Prantl, Michael Stiller: Helmut Kohl, die Macht und das Geld. Steidl Verlag, Göttingen 2000, ISBN 3-88243-738-3
The Domesday Book states that in 1086 Holdworth consisted of one ploughland with some woodland with a taxable value of two geld units.
There are videos for the songs "Geld/Money," "Your Turn To Run," and "You, You" (directed by Anne Carlisle) along with a live video for "Thrash Me" featured in a German documentary called Super 80.