According to Edith Reiter's 2014 book, this instrument was completed on 1 August 1907 and sold to a customer in Germany.
The model of this heckelphone is unknown; as of 2004, Howe & Hurd (2004) reported it to located in Vienna and owned by the noted oboist, Prof. Günter Lorenz.
The history of heckelphone #36 remains unclear.