Citanda: 24 August 410: the date it all went wrong for Rome?

On the periphery of our purview, but likely of interest. From the BBC:

Citanda: Roman Denarii Find

Somewhat vague item (without pictures) of a find of some Republican denarii by a metal detectorist in the UK:

Saw this fieldwork notice in the latest AIA eBulletin:

ante diem vi kalendas septembres

Volturnalia — rites in honour of a divinity associated with fountains/waters
479 B.C. — Greek forces defeat Persian forces under Mardonius at Plataea (according to one reckoning)
413 B.C. — lunar eclipse which caused hesitation amongst Athenian forces under Nikias in Sicily; the subsequent delay ultimately led to their destruction