According to Edith Reiter's 2014 book, this instrument was completed on 12 November 1928; it is a model 36i (a precursor to the conservatory system) with a one-piece bell.
As of June 2020, heckelphone #4055 is owned by Indiana University in Bloomington, Indiana (USA).
The instrument was donated to Indiana University in 1980 by Robert J. Tootelian of Chicago, Illinois (USA). As a master of woodwinds, Tootelian played more than 10000 performances in more than 100 musicals (by his count) at Chicago's Shubert Theatre. He played the baritone sax on the Crew-Cuts' 1954 hit "Sh-Boom." In 1976, when the Shubert Theatre took a break for a few months, Tootelian toured with Frank Sinatra, helping him warm up before each performance. Over the years, he also recorded many commercial jingles, including a long-running Green Giant commercial, in which he is heard playing three prominent low notes on the bassoon.
It is unknown who owned heckelphone #4055 before Robert Tootelian, but based on a stamp on the top joint, it has likely been built for a customer in the USA.
This instrument is in regular use (mostly by oboists for performances of Richard Strauss's Alpine Symphony) and in very good condition.