According to Edith Reiter's 2014 book, this instrument was completed on 21 October 1926 and originally sold to a buyer in an unknown location.
The model of heckelphone #3950 is unknown, but considering when it was built, it is likely a model 36i.
As of 2004, Howe & Hurd (2004) reported this instrument to be part of the collection of the Hamamatsu Museum of Musical Instruments in Hamamatsu, Japan, where it has been assigned inventory number A-0225R. Earlier, quite possibly directly after it was built, it was imported into the USA by Carl Fischer of New York. Otherwise, the history of this instrument remains largely unclear.