In ancient Egypt, the main unit of mass. Often romanized as deben; Akkadian sources indicate it was pronounced “tiban”. The value changed with time:

Old Kingdom, 2700-2200 BCE.
Weigall refers to it as the “egyptian Gold Standard”; Petrie as a “beqa”.
13.6 grams
Middle Kingdom, 2100-1788 BCE 91 grams
New Kingdom, 1580-1090 BCE 91 grams, = 10 qdt

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