https://en.wikipedia.org/wiki/Genesis_flood_narrative

Scholars believe that the flood myth originated in Mesopotamia during the Old Babylonian Period (c. 1880–1595 BCE) and reached Syro-Palestine in the latter half of the 2nd millennium BCE.[20] Extant texts show three distinct versions, the Sumerian Epic of Ziusudra, (the oldest, found in very fragmentary form on a single tablet dating from about 1600 BCE, although the story itself is older), and as episodes in two Akkadian language epics, the Atrahasis and the Epic of Gilgamesh.[21] The name of the hero, according to the version concerned, was Ziusudra, Atrahasis, or Utnapishtim, all of which are variations of each other, and it is just possible that an abbreviation of Utnapishtim/Utna’ishtim as “na’ish” was pronounced “Noah” in Palestine.[22]

Numerous and often detailed parallels make clear that the Genesis flood narrative is dependent on the Mesopotamian epics, and particularly on Gilgamesh, which is thought to date from c. 1300–1000 BCE.[23]

https://en.wikipedia.org/wiki/Croeseid

The Croeseid, anciently Kroiseioi stateres, was a type of coin, either in gold or silver, which was minted in Sardis by the king of Lydia Croesus (561–546 BC) from around 550 BC. Croesus is credited with issuing the first true gold coins with a standardised purity for general circulation,[1] and the world’s first bimetallic monetary system.[1]

I don’t think that they would have had gold coins then.