2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/118465A previously unpublished ultralow-dispersion spectrum of Sanduleak -69 202, the stellar progenitor of SN 1987A, is presented and the uncertain presupernova evolution of Sanduleak -69 202 is discussed.9 pages including 2 figures, accepted by Bull. Astron. Soc. India, a version with higher quality figures is available at http://nhn.ou.edu/~branch/87A.pdfAstrophysicstext