I did look at VB's photo and it does look like yours but not like the Lily Nook photo. Your lily appears to curl back more and is down facing, whereas the other is flatter and more out facing. If you look again at the register description, the (b) in the upper left corner signifies an outfacing lily.
This is a pretty old cultivar (I think it dates back to around 1949). No surprise if the Dutch don't have the original...
