103. No competitor in any race, show or
exhibition shall be entitled to win a prize
unless the ring carried by the bird was issued
to the owner, or had been transferred to and
registered in the name of the owner in
accordance with the provisions of the
preceding rule for a period of 14 days prior to
the date of the race, show or exhibition. Proof
of ownership of winning birds must be given
to the organisers or promoters before prize
money is handed over.