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Master-Knight
Master-Knight
Reddit
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2 active listings
First seen Apr 2026
New
Reddit
[WTS] Casio AT-550 Janus NOS, First Touchscreen Calculator Watch in the world 1984. Brand New Old Stock
Casio
AT-550 Janus
bnib
listed 4 hours ago
seller: Master-Knight
View original post
New
Reddit
[WTS] NOS Casio AT-550 Janus, First Touchscreen Calculator watch in the world. Brand New Old Stock
Casio
AT-550 Janus
bnib
listed 4 hours ago
seller: Master-Knight
View original post
![[WTS] Casio AT-550 Janus NOS, First Touchscreen Calculator Watch in the world 1984. Brand New Old Stock](/_next/image?url=https%3A%2F%2Fsxdtrcenjzhqcznhokgy.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Freference-images%2Freddit%2F1sce28a.jpg&w=1200&q=75)
![[WTS] NOS Casio AT-550 Janus, First Touchscreen Calculator watch in the world. Brand New Old Stock](/_next/image?url=https%3A%2F%2Fsxdtrcenjzhqcznhokgy.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Freference-images%2Freddit%2F1scdxbo.jpg&w=1200&q=75)