None of these.

No evidence yetAnswers 1 question0

Where it stands

No evidence yetIts tests haven't settled it: no evidence yet.

The questions it answers

When was the mechanism made?

Most likelyThe astronomical scheme was fixed to an epoch of 205 BC and the device was made then or soon after

Cite it

Mysteries Department. (2026). None of these. [Answer ANS0D3FQD3Y2WGB]. https://mysteriesdept.com/r/ANS0D3FQD3Y2WGB

@misc{mysteriesdept_ans0d3fqd3y2wgb,
  title     = {None of these.},
  author    = {{Mysteries Department}},
  year      = {2026},
  note      = {Answer, catalog key ANS0D3FQD3Y2WGB},
  url       = {https://mysteriesdept.com/r/ANS0D3FQD3Y2WGB}
}