Numbers 3:49-51

3:49 So Moses took the redemption money ¹  from those who were in excess of those redeemed by the Levites. 3:50 From the firstborn males of the Israelites he collected the money, 1,365 shekels, according to the sanctuary shekel. 3:51 Moses gave the redemption money to Aaron and his sons, according to the word of the Lord, as the Lord had commanded Moses.

[3:49]  ¹ sn The word used is “silver.” Coins were not in existence until after 700 b.c. (starting with Lydia).