AI transmitter (Shearwater/Oceanic?)

PLEASE READ THIS DESCRIPTION:   This is a used transmitter and has NOT been tested or confirmed working.  There are no markings to determine who the manufacturer is, however it looks very much like a shearwater (Gen 1) or Oceanic transmitter.  There are no serial numbers that we can read/find which is why we can't test it.  You will need the serial number in order to connect this to your computer.  Hopefully somebody knows a trick we don't and can get this connected to their computer.  Inside looks great, no signs of flooding and currently we've removed the battery.  SOLD AS IS, NO GUARENTEES OR RETURNS.