rockin: i just checked my shadows and i have mix of the two label types that appear on yours. some of mine have the LONDON, others have the LONDON and alphanumeric code... and some are brighter black with whiter text, some look more grey with light grey text. my plumage is the most prominent, it seriously looks like a shiny black label with almost white text.
the only es i still have in a pot has a slight ridge where the clear and black plastic meet on the lid when you run your finger over it. visibly, you can't see much of a difference between the clear and the black plastic.
all my shadows were purchased directly from MAC.