Italian Ball Dance Card 1887 Belonged to Emma Cordiglia Montero Lavalle (Wife of Argentinian Ambassador to Belgium)

Note inside states: "Ball card that my Dear Grandmother Used at the Court of Italy."
Emma Cordiglia Montero Lavalle (Wife of Argentinian Ambassador to Belgium)
Wife of Belisario Juan Montero Cisterna (Son of Gerónimo Montero de Oro and Gertrudis Cisterna Carrasco
Argentinian Ambassador to Belgium 1880s
Birthdate: December 27, 1857
Birthplace: Buenos Aires, Autonomous City of Buenos Aires, Argentina
Death: June 19, 1929 (71)
Tigre, Tigre Partido, Buenos Aires Province, Argentina
Place of Burial: Buenos Aires, Autonomous City of Buenos Aires, Argentina
First picture shows invitation by S. M. Umberto I King of Italy to Augusto Potier, son-in-law to the subject.
Interesting information regarding Umberto I of Italy:
Umberto I was the king of Italy from 1878 to 1900 and belonged to the 'House of Savoy.' He was also known by his nickname, “il Buono,” meaning “the Good.” After he ascended to the throne, he assumed the title “Umberto I of Italy,” instead of “Umberto IV of Savoy.” His reign was a period of turmoil, which was a consequence of his policies. His plans to colonize Africa and China, the lavish expenditure on strengthening the defense forces to support the kingdom of Prussia, his lack of concern for aiding education, his meager support for the upliftment of the citizens, the rise in prices of essential commodities, the poorly performing economy, the botched investigations into the Banca Roman Scandal, and his support of the notorious Bava-Beccaris Massacre made him hugely unpopular among his subjects, especially among the leftists and socialists. He survived two attempts on his life but succumbed to the third. He was shot dead on July 29, 1900.
I believe that the emblem on the front of the dance card symbolizes the "House of Savoy."