Scoring: Peru

• Date of joining: 1945-10-31
• Expected count from Wikipedia (José Luis Bustamante y Rivero onwards): 20
• Number in Wikidata: 20
• PositionHolderHistory warnings: 0
• Score: 76/76 = 100% 200/200 = 100%

This is an interesting one where the List of Presidents in English Wikipedia is less comprehensive than the equivalent list in Spanish Wikipedia. (Specifically, it omits the 1948 junta). Had Wikidata not been as equally comprehensive, I could easily not have noticed that enwiki was incomplete.