Watch List notes:

500 pesetas. October 1, 1903. Without series. (Edifil 2017: 311). Extraordinarily rare copy, without a doubt it is the rarest banknote of the entire 20th century, to give us an idea of its rarity since 2015 only 6 copies have been offered at public auction, professionally restored. Extremely Fine. PMG50NET encapsulation. (In order to contextualize its degree of rarity-quality, indicate that as of June 15, 2021, there is only another grade 30 graded PMG note).