Interesting. Those look much better. (And that isn't the promo company that contacted me). AMC is large enough they may have had two product runs.
Here are my observations of the ones above, and those which are showing up on eBay (with the AMC tag on the package):
-The quality control isn't top notch, some of them on eBay are very dark, some almost as bright as brass.
-All the icons appear the be manually punched into the faces. They are not cast. Quite a few of them have the icons randomly rotated around, or on the wrong faces. The circle icon is upside down on Panaflex' photos. But on another eBay listing they are twisted 45 degrees instead. Some also look over-punched. (Have a circle recess around the icon).
What size are they? Standard dice are 16mm. Casino dice are 19mm. It is debatable what the actual movie used dice size is. I vote 16mm as they look the same size in my hand as in Luke's hand.
Also, if that chain is real brass, and not plastic. You can probably darken it with some vinegar and salt to match the dice.