Verses with the word coffer in the Old Testament (3 verses):

1 Samuel 6:8
And take the ark of the LORD, and lay it upon the cart; and put the jewels of gold, which ye return him for a trespass offering, in a coffer by the side thereof; and send it away, that it may go.

1 Samuel 6:11
And they laid the ark of the LORD upon the cart, and the coffer with the mice of gold and the images of their emerods.

1 Samuel 6:15
And the Levites took down the ark of the LORD, and the coffer that was with it, wherein the jewels of gold were, and put them on the great stone: and the men of Bethshemesh offered burnt offerings and sacrificed sacrifices the same day unto the LORD.