• 7368 - Janbroers - October 1961 (est)
  • 7369 - Bogert - October 1961 (est)
  • 7370 - Keen - October 1961 (est)
  • 7371 - Sevink - October 1961 (est)
  • 7372 - Derksen - October 1961 (est) - Jan Derksen? RIH/Radium 1951-1963, world champion on a RIH SPORT