Isn't that supposed to indicate the place of packaging or manufacture?
(Does it state where the product is being manufactured somplace else on the carton?)
I would hazard the guess that american-made/american-packaged EL products have another city highlighted.
Anyway, what exactly do you mean : "you can spot an EL product " that way?
I think it would be easier just to Google which companies have been founded/bought by the EL group ( Aramis, Prescreprtives, Clinique, Origins, Bobbi Brown, La mer etc.). That would automatically mean that the product is by EL after all....
Hope I made sense. :