The USS Bradbury was the prototype for the Bradbury class light cruisers for Starfleet in the late 24th century.
Launched in 2366, the vessel still carried the prototype NX registry in the 2370s.
In 2371 the ship spent several weeks gathering three teams of scientists from Relva IV, Earth and Vulcan and trasporting them to Starbase 39-Sierra. ("Blinded by Science")