Rotate second image 180 degrees as advised in other post.
It is not crusader coin. Cross might fit crusader coins, but shield on other side does not. You might consider reconquista a crusade, but it was over by the time Habsburgs added fleur de lis to Spain's coat of arms and their chin to Spain's ruler portraits.
Spanish escudo should be 3.4 grams and 18-26 mm in diameter. Weight and measure your coin.
