A mx: XXB 8222 (label); ⁶⁰ ⓌXXB 8222² (runout, ² is underlined);
B mx: XXB 8223 (label); ⁶⁰ ⓌXXB 8223² (runout, ² is underlined).
Both recorded Berlin, November 13, 1928.
I'd say before 1937; it was around then that Century Bold (the font seen for the titles, artist and cat. #) was replaced with Cheltenham Bold which became *the* go-to typeface for printers that prepared Decca label copy to the early '50's.