Sentimental moment for me: going through old things I've found something ancient

What most ancient (or most ancient) contest t-shirt do you have?
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Sentimental moment for me: going through old things I've found something ancient

What most ancient (or most ancient) contest t-shirt do you have?
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I have t-shirt from dinosaur ages, very ancient
HackerEarth t-shirt, I got it before 10 days :D
Baltic Olympiad in Informatics 2005:
I'm a newbie here, my first t-shirt from programming competition is from 2010 (II stage of XVII POI).
My first one is from 2013 (9th grade, AmirKabir university of technology scholars contest). It's still large. I remember I wanted to give it to havaliza because it fitted him well :))
I have just one question
What is Malek D4nce Club 4????
On http://petr-mitrichev.blogspot.com/2014/01/this-week-in-competitive-programming.html the oldest is from IOI 2002 :)
Ancient tshirt with new profile picture :)
The oldest t-shirt — TCO'05. It's so well-preserved because it's wrong size for me; I had to deprecate a lot of more modern t-shirts due to high levels of wear and tear.
The most treasured — probably GCJ'10, as it's the only one from Code Jam.