Remember Eastern Airlines? One of the big guys but they gave it up in 1991. Here's an advertising chip from that company the must have been created in the 1980s (but TCR says 1970s). Blue, silver hot-stamp with Las Vegas on one side, Reno-Tahoe on the other, EWING mold, and drilled (probably for use on a keychain). TCR catalog V8376.

Someone last year bought up the rights to the name and logos and was trying to start up the airline again. I can't find anything later than January of this year about this so I guess it fell through.

I submitted this chip to TheChipGuide today and interestingly, there is a 50c Eastern adv chip already listed. Had a DIECAR mold though. I wonder how many types of adv. chips they created?