International Amateur Radio Awards
International Amateur Radio Award Gallery - Ham Radio Award Collection.
SV1OCA - Leonidas Bairaktaris has 74 Amateur Radio Diplomas, Awards, and Certificates.
Leonidas Bairaktaris (SV1OCA) - Google Sites:
"Amateur radio diplomas" certify that one has made a certain number of radio calls under prescribed conditions. Various radio amateur organisations issue the diplomas. The requirements are very different. They range from confirming radio communications with a given city to proving radio communications with 100 countries worldwide. The creation of diplomas is intended to increase the activity of radio amateurs. The aim is to motivate those who want their successes confirmed in writing, and to have this document serve as an attractive decoration for their "Radio Shack".
This is how Hans-Joachim Pietsch, DJ6HP, defined the term in his Amateur Radio Lexicon [1] published by Franzis-Verlag in 1981
https://www.wimo.com/en/awards-and-certificates-for-amateur-radio
The American Radio Relay League (ARRL)
CQ Communications, Inc.
The National Association for Amateur Radio in Australia, Wireless Institute of Australia (WIA)