This Bible contradiction is from the Skeptic's Annotated Bible.
1 Kings 9:27-28 View context
And Hiram sent in the navy his servants, shipmen that had knowledge of the sea, with the servants of Solomon.
And they came to Ophir, and fetched from thence gold, four hundred and twenty talents, and brought [it] to king Solomon.
2 Chronicles 8:18 View context
And Huram sent him by the hands of his servants ships, and servants that had knowledge of the sea; and they went with the servants of Solomon to Ophir, and took thence four hundred and fifty talents of gold, and brought [them] to king Solomon.