To determine if your home is finished with a proper EIFS, you can try to carefully rap on it as you would a door. If it sounds hollow, it is probably an EIFS. If the sound is more solid in nature, it is likely a plaster stucco product. Should the feel of the wall have a very coarse texture, this would be another indicator that a stucco product has been applied.
It is important to note, however, that EIFS coatings can also be applied without insulation directly onto hard sheathing boards, like cement board. Rapping on this type of application will also produce a solid sound, similar to stucco.