The Odeon discograĥy is available on Chris Zwarg's website:
https://www.truesoundtransfers.de/disco.htm
Here are the details of your record:

xM 1805-2
1913/14 MIL X 110373

Enzo Baccante (Bar), (O) DER SCHMUCK DER MADONNA (Ermanno Wolf-Ferrari / E.
Golisciani, Carlo Zangarini; tr.: H. Liebstöckl): Bacio di lama
xM 1806
1913/14 MIL X 110374

Enzo Baccante (Bar), (O) DER SCHMUCK DER MADONNA (Ermanno Wolf-Ferrari / E.
Golisciani, Carlo Zangarini; tr.: H. Liebstöckl), II: Aprila, o bella
(Serenata)

2018-05-14 22:03 GMT+02:00 Jolyon S Hudson <[log in to unmask]>:

> M/xM/xxM are Odeon Milan recordings and are differentiated from the
> recordings made in Milan by Fonotipia as in Ph/xPh/xxPh/xxxPh/Pho
>
> The matrix number you quote are among the last in that series and date to
> 1913/1914 ish
>
> Best Jolyon
>