• 7547 - van Leeuwen, B. - January 1964 (est)
  • 7548 - Vossen, G. - January 1964 (est)
  • 7549 - Deijkers, T - January 1964 (est)
  • 7550 - Buisman, P. - January 1964 (est)
  • 7551 - Schoonmaker - January 1964 (est)