From Jascha Heifetz: Early Years in Russia by Galina Kopytova, Albina Starkova-Heifetz, Dario Sarlo, and Alexandra Sarlo.
The mohel Osher Spoikoino, who officiated at the bris of Jascha Heifetz in 1901, according to this record, also officiated at the bris of Jack Cherlin in 1904. In both cases, there is substantial doubt about the accuracy of the recorded date. As far as Jascha Heifetz is concerned, that is discussed in the extract above.
Source
Received from Stew Cherlin in 2020.
Jack, birth record (Russian) Hall 1A.
Created 2020.