Museum currently exhibits 3161 unique bags.
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WELCOME ABOARD! We hope you don't have to use this.
Which I think is a quite decent sentiment.
Big time collector, Thomas Homer Goetz claims it's from the Dutch Antillean Airlines. I wouldn't be surprised if it was used on both.
Reproduction expert (?) Joey Cornelissen from the Netherlands says, "This isn't a sickness bag. You know women use this when they are in their period. You probarbly will know what I mean. It mostly hangs in Bathrooms at restaurants. I heard about your site on Dutch television and I thought let's look. And when I saw this back I read the instructions in Dutch, because I'm Dutch. It's a bag for women to throw there 'dirty' press-on panty-liners in. So not a bag to throw up in. "
Putting all doubt to rest, former premier big-time collector Ben Guttery passes his expert opinion that it is KLM, and so it is noted as such.
Straight Top
Serrated Top
Dutch speaker Carl-Cyril Dreue to the rescue with the answer: Dutch changed it's official spelling in 2002, so there's your answer!
Anyway, if you look at the revamped bottom of the bag, you'll see the retro abstract guy throwing garbage out, originally popularized by a mid-70s Qantas bag.