These cartridges were loaded at the Toledo plant of the Santa Bárbara company.
The first one is a low pressure test (pressure 20% lower than standard) ordered by the INTA (Instituto Nacional de Técnica Aeroespacial, National Institute for Aerospatial Technique). This is a government owned company. The cartridges were intended for testing armoured cars. Commercial boxes were used for packaging.
The second is a conventional high pressure test round for pistol and submachine gun proof testing.
None of the two types bear distinctive marks, so I guess their collector value is limited. They also would be hard to tell if found out of their boxes.