The IBM Executive came in more than one typeface.
"Choose from 12 distinctive and exclusive type faces the one which best expresses the character of your company and your self. For instance, here are three:I have no idea what the other 9 typefaces look like, nor do I know what special characters might have been made available."IBM Bold Face Type is a strong, straightforward type, distoinctly masculine in character.
"IBM Secretarial type is warnm and personal, yet has businesslike dignity
"IBM Mid-Century Type, with its clear-cut lines, is direct, modern, convincing."
According to the man that wrote the book on typewriter fonts (catalogued over 4000, regarded as "the expert" on typewritten documents), this font (Times New Roman) didn't exist as a typewriter font.