Here's my current collection of American Beehives. From left to right:

-Fizzy Light Aqua -- RN (Roman Numeral) I -Slightly Darker Light Aqua -- RN V -Green Aqua with Large Snot Line -- RN V -Blue Aqua with Small Snotter -- RN V -Strong Blue with some Light Milk Throughout -- RN V -Apple Green & Blue two tone with lots of milk and amber -- RN V

Notice the differences between the RN I and RN V mold. I've heard of RN II, RN III, and RN IV, but have yet to see them. Obviously, I would like to own the set.

Enjoy!