Judging from the "1-2-3-4" picture, I get the impression that Stern either couldn't afford Dan X. Solo's 24 Moderne Display Fonts CD-ROM and book from Dover Publications, which contains the Chesty font (which looks like the true source of the show's logo, except for an altered uppercase R) or thought that the freeware Fortune Wheel was the only such font available.
If one uses the flipper buttons to select letters in solving the puzzles, there had better be a generous time limit (about two minutes, but inversely proportional to how many letters are showing), or no time limit at all.