Greg Heumann is an important address for harp microphones in the United States.
Here a few pictures of the "new" Bulletini that Dirk sent me. I've heard the microphone, it is quite at the level of the old Shure bullets, maybe a little more bass and a little cleaner.
Boris (drstrange) also sent some products from Greg to me. A bullet made from wood, the Shure 545 with potentiometer in LoZ and HiZ and an extensive collection of adapters.