Hello, this is the monument industry font Vermarco. Due to the age of this memorial, it is likely that either the original metal Spacerite version was used and the lettering was hand-cut in the sandblast stencil, or the plastic ScotchKut version of the alphabet was used and a press was used to cut the lettering in the stencil.
The two versions are nearly identical, but both of them, along with other versions of Vermarco, are available in the font shop: https://www.monumentletteringcenter.com/product-tag/vermarco-fonts/