Perhaps the name of this instrument is wrong - after all, it is considered a direct descendant of Mama Tin. But some things are much more beautifully made, even the material is finer. And anyway, since it was given as a gift to a brother - the name is correct again.
Played acoustically, the instrument sounds somewhat fuller and warmer than Mama. The theory is that the sound hole and the resulting Helmholtz resonator support the low notes - apparently practice can confirm this.
The neck of Brother Tin was made of mahogany, the fingerboard was cut out of a leg of a dining table - don't worry, the table is no longer in use.
★ Images presented on this Site courtesy of GEMA, by the way, thank you brother, for the great photos you took for us.