Once again a problem with collecting something that wasn't created as a collectible, in many cases, you need multiple samples to find variations in the item you are collecting. Just like Matchbooks, swizzle sticks, and I'm sure Napkins as well, vendors came in with "better deals" and items were replace by the new company.

Here is my examples on the Caesars Palace coin cup.

Example #1 you see 5 cups from 3 manufactures. you can see that the Lilly cup is shorter that the other 4

Example #2. Bottom of the cups you see Sweetheart and Lilly Brands

Example #3 The 3 Solo Cups have color variations and the bottom of the clubs the font and print are different. (OK, so the 2 in the back might be close enough to be the same)

So for the few of us that collect coin cups, just another thing to keep you up at night.