Collecting Airline Safety Cards - What's the Rarest One You've Found?

So I've been diving into the world of airline safety card collecting lately, and I gotta say, it's more fun than I thought it'd be! There's something about the different designs and seeing how they've changed over the years that's super interesting. I'm still pretty new to it, but I'm curious about what makes a safety card rare or valuable.

For those of you who've been collecting for a while, what's the rarest safety card you've come across? Did you find it at a swap meet, online, or maybe on a flight? And do you have any tips for spotting a gem among the more common cards?

I heard a rumor that some Concorde safety cards are super rare and can be worth quite a bit. Not sure if that's true, but it got me wondering if there are any other cards out there that collectors are always hunting for. Would love to hear your stories or any advice you've got!

I've heard those Concorde cards are a big deal too. Never got my hands on one though. The rarest one I've found was from a short-lived airline, Panagra. Picked it up at a garage sale of all places. It was just mixed in with a bunch of random travel stuff. For spotting gems, I usually look for cards from defunct airlines or ones with unique designs that might've been short-lived. Any cards from special flights, like inaugural ones, can be rarities too.