Alexis, check out this Hy-gain manual. Maybe your antenna has missing parts or has been modified.
Figure #6 in this manual shows three driven elements on this 7-element beam. The elements are different but there is some similarity to be noted in the manual.
To me the additional element(s) above the driven element in your images could be another type of a beta match and that could suggest to me that the antenna is a single frequency beam.
Eddoe - Marconi