German fancier Köhler Andre (Lübbecke) invested a lot in original birds of Hans and Evert-Jan Eijerkamp  and also in the strain of  Willem de Bruijn.

On his breeding loft he has children out famous Eijerkamp birds such as "Olympic Leo", "Silver Power", "Mr. Exclusive", "Geeloger", "Andres", "Evita", and so on

Especially for Pigeon Bids Andre offers a top group of children out his original Eijerkamp birds and  100% Willem de Bruijn birds

In this auction André offers 2 grandsons and 1 granddaughter of "Geeloger" (1st Nat. ace KBDB Allround @ Limbourg and now owned by Eijerkamp)