If the font is not installed it will display as a monospace font, expect in the case of monospace fonts, they will display as a serif font.
Helvetica
abcdefghijklmonpqrstuvwxyz
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Arial
abcdefghijklmonpqrstuvwxyz
1234567890
Courier
abcdefghijklmonpqrstuvwxyz
1234567890
Courier New
abcdefghijklmonpqrstuvwxyz
1234567890
Lucida Grande
abcdefghijklmonpqrstuvwxyz
1234567890
Lucida Sans Unicode
abcdefghijklmonpqrstuvwxyz
1234567890
Garamond
abcdefghijklmonpqrstuvwxyz
1234567890
Georgia
abcdefghijklmonpqrstuvwxyz
1234567890
Monaco
abcdefghijklmonpqrstuvwxyz
1234567890
Tahoma
abcdefghijklmonpqrstuvwxyz
1234567890
Trebuchet MS
abcdefghijklmonpqrstuvwxyz
1234567890
Times
abcdefghijklmonpqrstuvwxyz
1234567890
Times New Roman
abcdefghijklmonpqrstuvwxyz
1234567890
Verdana
abcdefghijklmonpqrstuvwxyz
1234567890
Serif
abcdefghijklmonpqrstuvwxyz
1234567890
Sans-serif
abcdefghijklmonpqrstuvwxyz
1234567890