Each stallion's Reg # indicates
where the stallion was born. An "A" indicates
born in the United States or Canada (OSB-A-S000).
An "E" indicates that the horse has been imported
Reg #s beginning with the "GRB" prefix indicate that the
stallion was approved by the NATA prior to the Reunification.
Reg #s which are followed by an "R" (OSB-A-S002R) indicate
that the stallion had restricted status. Only the foals by
these stallions that are out of purebred Trakehner
mares without a Thoroughbred, Arabian or Shagya parent
are eligible for registration with the ATA.