These letters are perhaps a reference to the Latin alphabet, the most popular alphabet in the world. Or they could be hearkening back to a simpler time.

From Wikipedia:

“ABC” is a 1970 number-one hit song by The Jackson 5. “ABC” was written with the same design as “I Want You Back”, and was first heard on American Bandstand (which, fittingly, aired on the ABC network) in February 1970. “ABC” knocked The Beatles song “Let It Be” out of the number one spot on the Billboard Hot 100 in 1970. “ABC” was also number one on the soul singles chart for four weeks.

Or not.  It could be that the owner of these fine, simple, latin letters, remembers the quasi-national “Anything But Conservative” campaign captained by former premier Danny Williams.

It’s really hard to say.