Exo 30:13 | CPDV | STEP | Then all those who pass shall give by name: one half shekel, according to the measure at the temple. A shekel has twenty obols. The half part of a shekel shall be offered to the Lord.

‏ Exodus 30:13

13 Then all those who pass shall give by name: one half shekel, according to the measure at the temple. A shekel has twenty obols. The half part of a shekel shall be offered to the Lord. ^{▼▼30:13An obol is a coin (and a unit of weight) worth one sixth of a drachma.(Conte)
,} ^{▼▼30:13 Half a sicle: A sicle or shekel of silver, (which was also called a stater,) according to the standard or weight of the sanctuary, which was the most just and exact, was half an ounce of silver, that is, about half a crown of English money. The obol, or gerah, was about three halfpence.(Challoner)}