Seeking death certificates for Francesco & Virginia Gauzza

I cannot locate the image of the Death Certificate for my GGF Francesco Gauzza (died Sept. 6, 1927).  I found the Pennsylvania State Death Index #87351.

I found the image of death certificate for my GGM Virginia Gauzza on Ancestry.com (died Sept. 1, 1924).  The Pennsylvania State Death Index for my GGF is #83861.

I need to order certified copies of death certificates for both my GGM and GGF, for apostille in conjunction with a dual citizenship application. They lived in Allegheny County.