the basic arrangement is Heuers on top, then the Poor Man's Heuers, then the others. I try to spread out the similar watches (so that no two Monacos) are touching, and vary the colors (black versus white), to keep it interesting.

within the individual watches, there are some intentional placements, such as:

• most expensive next to the least expensive [I bet you can find these];
• World War II German pilot's watch adjacent to Israel Defense Forces watch; and
• the four strong black "tool" watches at the bottom corners (columns 1/2 and 9/10), to support the whole thing.