I will describe the four different versions:

1. V1280 - "LAS VEGAS, NV" and "BJ"

2. N1997 - Three varieties:

a. and b. Two different shades of inserts.

c. Thin-line edge inserts, and no, these all come in one shade.

These differences are subtle and are easier to spot when you are looking at a stack of chips that have been aligned by their inserts.

Jim