Tinker,
I believe the Grifnee engraved Holland is Grifnee's take on an earlier Holland theme. It is purported that Holland commissioned possibly Kell or one of their other engravers at the turn of the century to come up with a theme not using animal life for their muslim clientele ( Nizams and Nawabs) who objected to animal life being "recreated" on their firearms. Evidently mythical life forms were ok. I have seen a number of Holland rifles engraved by various artists with this theme. Here is one done in the 30's in the Kell studios.