LA ESTRELLA DE OCCIDENTE, Sonora, Mexico, Dec. 31, 1875 Translates to: "The Star of the West", noting in the masthead (translated): "Official Newspaper of the Government of the Free and Sovereign State of Sonora".
Of interest is that it is printed on light orange "necessity paper" which is tissue paper thin.
Four pages, never bound nor trimmed, 12 by 16 1/2 inches, totally in Spanish, nice condition.

Background: This December 31, 1875, issue of La Estrella de Occidente ("The Star of the West") serves as a rare primary source document, capturing a critical inflection point in 19th-century Mexican history. As the official organ of the Government of the Free and Sovereign State of Sonora, it contains key primary-source content such as local legislation, border security reports, and state administrative decrees printed right as General Porfirio Díaz was preparing his historic revolt against President Sebastián Lerdo de Tejada under the Plan de Tuxtepec. What makes this specific four-page, untrimmed, and unbound issue exceptionally rare, however, is its physical composition: it is printed on vibrant, light orange "necessity paper". Because remote frontier regions in northern Mexico faced severe supply chain blockades and economic hardship, standard newsprint was often unobtainable; printers resorted to using thin, imported decorative or wrapping tissue paper to keep official state communications functioning. Surviving frontier "tissue paper" newspapers from this tumultuous era are remarkably scarce due to their inherent fragility, making an intact, untrimmed specimen in nice condition an exceptionally desirable artifact of both Latin American journalism and printing history.