My guess would be that both tracks were recorded in Milan around 1912 and released in the UK around 1915/16. It turns out, Columbia also released the B side on its Spanish-language C-series, as Columbia C 2315, performed by Banda Municipal de Milán (a.k.a. Banda Municipale De Milano): https://78records.files.wordpress.com/2017/01/columbia-c_spottswood.pdf