I'm rubbish at spelling so I tend to feel a bit hypocritical when pointing out others' mistakes. But... I spotted this grave mistake in Beccles today.
There are some professions where accuracy in spelling, especially when using proper names, is really quite important. If you are advertising your professional knowledge of appropriate fonts, best to spell them correctly. For added bonus points, avoiding superfluous upper-case lettering is helpful, especially when spelling out 'lower case'