A little late on this, but if you need it again this was originally a plastic SKS letter set called Raised Modified Roman, which was bolder with thicker stems than the Modified Roman sets and like the name implies, was meant to be used for raised lettering. Cochrans monument software has a version of it called Nelson Roman, and I know the Monument Lettering Center will have a TTF/OTF version soon, but I am not aware of any other versions.