A Bohemia sports memorabilia company has agreed not to sell Jim Brown's 1964 championship ring until the football legend's lawsuit is resolved, according to a court filing.

The former NFL and Manhasset High School star running back sued Lelands.com last week for attempting to sell his ring without his permission and also for claiming he is suffering from concussion-related mental lapses.

Brown said in the lawsuit, filed in federal court in Manhattan, that the ring was stolen from him in the late 1960s and the company has refused to return it to him.

Attorneys for both Brown and Lelands.com presented the court this week with a preliminary injunction that bans the sports memorabilia company from doing anything with the ring - including selling it - "until this matter is fully determined on its merits or the parties have fully resolved this matter among themselves."

U.S. District judge John F. Keenan signed the injunction on Wednesday.

The ring was already available for auction on Lelands.com when Brown filed his lawsuit, with a leading bid at the time of $58,978. But Lelands.com took the ring off its website before the auction closed on Friday.

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Brown's lawsuit says the company alleges that it got the ring from a relative of his.

Lelands owner Josh Evans, named as a defendant in the lawsuit, has said Brown's claims are "entirely without merit."