The third Hanriot entered in the 1911 Concours military trials had a 200hp Clement-Bayard. Photos show a machine similar to the IX but with an extended wingspan, single, larger tank hanging form the pylon and triangular, non-arched pylon uprights front and back. It looks to have a 100hp Clement-Bayard. This is the machine featured in the Automobiline ad.
The longer-winged 100hp machine at the 1911 Concours Militaire has a "28" on the underside of the starboard wing.