Hello, this is a version of the monument industry font Free Form Roman. It is based on lettering designed by British artist and calligrapher Percy Smith. The American Institute of Commemorative Art brought it into the American memorial industry originally as part of their blueprint alphabet series, and it was later published in the American Monument Association book Symbols, along with several other alphabets.
There are several digital versions, with varying weights and styles of numerals (lining vs. non-lining), including some created by AICA members. There was a version available in the old Craftech software, which has since closed down and is now unavailable. There is also a version under the name “Featherleaf Roman”, available for Gerber users by the Drafting Shoppe.