Etymology of "box" related to Pandora.
The original Greek word used was pithos which is a large jar.

pithos

The mistranslation of pithos as "box" is usually attributed to the 16th century humanist Erasmus of Rotterdam when he translated Hesiod's tale of Pandora into Latin. Hesiod's pithos refers to a storage jar for oil or grain. Erasmus, however, translated pithos into the Latin word pyxis, meaning "box".[1] The phrase "Pandora's box" has endured ever since. This misconception was futher backed by Dante Gabriel Rossetti's painting 'Pandora'.

Blame or shame on my otherwise much admired long gone fellow country-man, if this is true.