Label highest values

I have a feature class with duplicate features (sort of) and I want to only label the highest values of the duplicates.

For instance, 3 features have the ID XXX-XXX-000, XXX-XXX-100 and XXX-XXX-200. Some "duplicates stop at 000, some go to 400 or 500. The question is, how can I only label the highest value among the "duplicates"? In the instance above, I only want a label forXXX-XXX-200.

Thanks.