According to Edith Reiter's 2014 book, this instrument was completed on 30 October 1928 and originally sold to a buyer in an unknown location.
Howe & Hurd (2004) describe heckelphone #4054 as a model 36i, tuned at A=435.
As of 2004, heckelphone #4054 has been reported to be owned by oboist Stella Amar of Toronto, Canada. Previously, it has belonged to Canadian clarinetist Avrahm Galper and been used in orchestras in Montreal and Vancouver.
The history of heckelphone #4054 remains largely unclear.