According to Edith Reiter's 2014 book this instrument was completed on 1 October 1983 and originally sold to a buyer in Germany.
Howe & Hurd (2004) describe heckelphone #4983 as a model 36 voll cons.
As of 2020, heckelphone #4983 was located in Munich, Germany, owned by noted heckelphone expert, Dr. Gunther Joppig, who purchased it directly from Heckel.