Desde qué fecha es la Diputación de Vizcaya propietaria del cuadro de la Jura de los fueros por el rey D. Fernando el Católico

The painting "The oath of the Jurisdictions by the Catholic King Fernando" was offered to the Sociedad Económica Vascongada de los Amigos del País, but this association rejected the purchase. It is not possible that the Diputación of Bizkaia would have wanted to sell it so the painting was not in its possession in 1774. The question is when and who sold the painting to the Diputation