According to Edith Reiter's 2014 book this instrument was completed on 1 May 1994 and originally sold to a buyer in Germany.
Howe & Hurd (2004) describe heckelphone #5000 as a model 36 voll cons.
As of 2004, heckelphone #5000 was reported to be located in Frankfurt am Main, Germany, owned by cor anglais and heckelphone player Wolfgang Schottstädt.
It is likely that Schottstädt acquired this instrument directly from Heckel.