I would, at first glance, suggest that the particular font does NOT reside on the errant Mac. I can't think of another reason. Perhaps font substitution?
Thanks, Rick. I only checked that Mac's font list by hopping over to Word and see what was listed as available. I guess I need to study up on how to ensure that Verdana actually resides on the Mac or delete it and reinstall somehow. Not my forte!
Mac's have several types of Font Caches. These caches can become corrupt and need deletion. (as well as the Font itself can be damaged)
System Font Caches, User Font Caches, and Application Font Caches.
Several utilities will delete these caches - Onyx, Cocktail, YASU, AppleJack, FontNuke - are some examples.
Linotype Font Explorer X does the best job of Mac Font Maintenance IMHO. http://www.fontexplorerx.com/
David, thanks so much for that head's up. I'll check it out and report back!