The ark as mentioned on a file for Kivas Fajo
The Lost Ark of the Covenant was a rare and valuable object that was held in the possession of Zibalian trader Kivas Fajo, prior to its confiscation by the Federation in 2366.
This object was mentioned in a listing of Fajo's collections in his file from the Federation biographical database. (TNG: "The Most Toys", okudagram)
The file was partially illegible onscreen, but was able to be clearly read when it was sold at auction in 2018. [1]