Hello, this is a font called Elbreco. There are currently no versions of it available for sale, or in any software. The history is a bit murky, but it is believed to have been designed by an AICA member, and dates back to at least 1958. It was never included in the Spacerite catalog of alphabets, but it was made into a custom metal Spacerite alphabet at some point and possibly made available only to AICA members.
It is very similar to another font called Westminster, which is slightly bolder and narrower, and some letters and numbers contain difference. AICA members have created digital versions of both fonts.
The good news is that the Monument Lettering Center has collected rubbings of the Spacerite letters and is currently working on an MLC version. It will likely be available sometime this year. In the meantime, if you’d like help matching an inscription, feel free to use the inscription matching service: https://www.monumentletteringcenter.com/product/cemetery-inscription-matching-service/