Font with Latin, Greek and Cyrillic characters. Extrapolated from a 5-letter logo for an Austrian Power Company.
"Ambigrams" are words with lettering designed in such a way that they can be read the same way from different angles.
Simple ambigram for the name Jennifer, which reads the same from both directions.
This, then, is an alphabet for phrases that would be readable both right-side-up and upside-down. For example, the word "pod" or the phrase "smart jews" would look exactly the same from both directions.