Prefixes

The original prefixes award (WPX) is administered by CQ Magazine.

Some national awards are also available.

Worked Slovenia Prefixes (Slovenia)
PX Indonesia
California Prefix Award (USA)
WPX Award (USA)
Worked Croatian Amateur Radio Prefixes (Croatia)
LY WPX Trophy (Lithuania)

Please note that the awards listed above are just examples of my collection of nearly 3,000 certificates