No idea, but why would you or anyone else want one? The newer 9DOF sensors all significantly outperform it, and if purchased from a reputable supplier, are guaranteed to work.
Cheap sensor modules of the "GY-" variety are throw-aways built from obsolete, clone or substandard parts, intended for hobbyists having fun putting things together on a breadboard, not for any serious use. They are often sold in multiples, so that there is a good chance that one or two will be fully functional.