There are a number of differences between die 1 (the U305 family [U306,...]) and die 2 (U311 etc.) and Scott chose the worst one to use in their catalog.
To the uninitiated, what counts as a "tooth"? Is it a green tooth or is it a white (paper color, actually) tooth?
I use the style of the ornaments as the quickest attribute to discern a die 1. Die 1 rays are all uniform and create a more circular arrangement than the typical (and there are many) die 2 arrangement.

Die 3 requires that you have a good strike. The key is essentially a double earlobe.

All of yours are die 2.