According to Edith Reiter's 2014 book, this instrument was completed on 10 October 1999; it is a model voll cons ("full conservatory system") and has an additional muting bell.
As of November 2020, heckelphone #5007 is owned by the Royal Danish Academy of Music in Copenhagen (Denmark). It is likely (although not yet confirmed) that the Royal Danish Academy purchased the instrument upon its completion and has owned it since then.
This instrument is in regular use and in excellent condition.
The instrument can be seen (and heard) at 8:40, 17:21 and 18:25; the heckelphonist is Ulrich Trier Ortmann from the Danish National Symphony Orchestra.