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Casio watch
I bought this watch in 1985 and it has a touch screen built-in calculator. Touch screen was virtually unheard of back then and when I showed it to people they were amazed. Do you think it is worth much? Surinder Loi, via email Wait a second... this looks like a Casio AT 550 Janus Touchscreen Calculator Watch – a cool, retro item and, yes, very much worth a good few quid. It is digital-analogue and I believe it is the first, or certainly one of the earliest, touch screen watches – a whopping 30 years or so before the iwatch. If in very good and working condition, this is most likely worth €750 or more. If in used condition and not working so well, I’d say it is worth around €250. A timeless classic and a museum piece in years to come.