There is also some reason to be skeptical, as over the centuries dozens of nails have been linked to the Crucifixion. “Very little reliance can be placed upon the authenticity of the 30 or more holy nails which are still venerated, or which have been venerated until recent times, in such treasuries as that of Santa Croce in Rome, or those of Venice, Aachen, the Escurial, Nuremberg, Prague, etc.,” the Catholic Encyclopedia stated in the early 20th century.