I believe this must be a product of the Pirotecnia Militar de Sevilla.
Brass case with no neck crimp.
Brass percussion primer. The diameter of this primer is smaller than that of the regular german electric primer, so this case couldn’t use a German primer.
The projectile is German, Armour-Piercing Tracer, marked “bmv 1 f 41”.
Does anybody know other samples of percussion-primed 13 x 64B?