Albert Barnes Commentary 1 Chronicles 29:7

"and they gave for the service of the house of God of gold five thousand talents and ten thousand darics, and of silver ten thousand talents, and of brass eighteen thousand talents, and of iron a hundred thousand talents." — 1 Chronicles 29:7 (ASV)

The word translated here as “dram” is regarded by most critics as the Hebrew equivalent of the Persian “daric,” an ordinary gold coin worth about 22 shillings in British money (circa 1880s).

This does not mean, however, that the Jews possessed darics in David’s time. Rather, the biblical writer wished to express the value of the gold subscribed in language that would be intelligible to his readers. Therefore, he translated the terms used in his source documents, whatever they were, into terms that were current in his own day. The daric became common in Palestine soon after the return from the captivity (Ezra 2:69; Ezra 8:27; Nehemiah 7:70–72).