Kate Smith and her Swanee Music [uncredited]
Runout has the master number Ⓦ 365038 as well as the number 65070.
Recorded in New York, NY, October 28, 1931.
According to Ross Laird, Moanin' Low: A Discography of Female Popular Vocal Recordings, 1920-1933, page 497, this version of "You Try Somebody Else" (mx Ⓦ365038-1) is by Kate Smith and her Swanee Music, recorded in New York, NY, October 28, 1931.
In the US, it was released on Velvet Tone 2465-V with "Goodnight Sweetheart" (mx Ⓦ365038-2) on the flip side; in the UK, on Columbia DB734 (released Dec.? 1931) and in Australia, on DO694, both with "I apologize" (mx Ⓦ365032-2, rec. NY, Sept. 15, 1931) on the flip.
Your copy must be a test pressing produced in preparation of the British release.
I think you can safely update the uncredited artist to Kate Smith and the label to Columbia [UK].
Not sure exactly why Columbia [UK] used two matrix numbers on their records, but I noticed they do so also in the runout of one of the few records I myself own on that label: https://www.45worlds.com/78rpm/record/cb382, which must be from early 1931, Jack Payne with "Joey The Clown" / "On A Cold And Frosty Morning":
So that leaves a few questions. First, should the entry be updated to say Kate Smith. Second, what does the number 65070 refer to. I don't know however if we can update the country or year with any certainty.
Both Velvet Tone and Clarion were subsidiary labels of Columbia Phonograph Company, Inc. Starting in early 1931, these two labels, as Tony Russell explains in his book Country Music Records, were so closely linked that they issued the same couplings in almost the same order (page 14).
He further writes, "Around 1932-1933, Columbia departed from this policy [of recording songs that it would release only on its budget labels], issuing on Velvet Tone and Clarion some recordings that were also appearing on Columbia or OKeh and initiating recordings for those labels in a 356000 matrix series."(page 15). This fits to the Ⓦ 365038 matrix number; the Ⓦ stands for an electric recording made with the Western Electric process.
More important for this test recording, the parent company of both Velvet Tone and Clarion, the Columbia Phonograph Company, Inc., was acquired by its former British daughter, the Columbia Graphophone Company Ltd, in 1925. I suspect that C. G. Co., Ltd stands for the Columbia Graphophone Company Ltd.
Given what research I have done, this appears to be a test pressing of "You Try Somebody Else (We'll Be Back Together Again)" by Kate Smith as recorded for Velvet Tone and in 1931 and released by them as catalogue number 2465. Certainly it is her singing and this youtube video matches the record
The runout has the master number W 365038 (W in a circle) as well as the number 65070. I can't determine what that corresponds to as far as a catalogue number to track it to an exact label or country.
Also -- not an acetate in that sense, but a single sided ten inch shellac test pressing