Tossup

A 2022 study of one of these objects by University College London proved the existence of the usurper Sponsianus (“spon-see-AN-us”). One kind of these objects, whose predecessor took its name from quadriga chariots, was replaced by the antoninianus (10[1])in the 3rd century. Customarily, one of these objects dedicated to Charon was placed in the mouth. (10[2])The Arabic (10[1])word (10[2])dinar (10[4])originates from one kind of these objects called the denarius. Roman emperors depicted themselves on these objects’ obverse to distribute their likeness across the empire’s trade routes. For 10 points, numismatists study what sort of metallic objects used as Roman currency? ■END■

ANSWER: coins [or coinage; accept obol or aureus; accept denarius until read; prompt on currency until read; prompt on money]
<Editors, Other History>
= Average correct buzz position

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