Real Madrid Προπόνηση/ Αναψυχή φανέλα ποδόσφαιρου 1987 - 1988

1987 - 1988 Real Madrid training/leisure φανέλα ποδόσφαιρου. Think this is a Training Leisure Shirt. Is in an NFL Jersey style made by Hummel with the number 87 (assuming for the year?).

Any further information or Valuation appreciated