According to Edith Reiter's 2014 book this instrument was completed on 1 March 1998 and originally sold to a buyer in the UK.
Howe & Hurd (2004) describe heckelphone #5004 as a model 36 voll cons with an unusual, dark red mahogany finish.
As of 2004, heckelphone #5004 was reported to be located in Birmingham, UK, owned by the Birmingham Contemporary Music Group (BCMG), who likely acquired it directly from Heckel.
Heckelphone #5004 can be heard, played by bassoonist Margaret Cookhorn of Birmingham in the recording of Simon Holt's eco-pavan for piano and ensemble.