This is the original install floppy for the IBM 56K Voice Modem Internet Kit, model 10L7389. The kit included the driver disk, the modem and a headset. The modem itself is an IBM3791. This was manufactured for IBM by U.S. Robotics and isn't supported on the 3com/usr site.
There's no FCC ID # visible on the modem, only the FCC model #: Sportster 0467