Prefixes

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

Some national awards are also available.

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

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