I schlepped over to the Oxfam shop it was in at lunch and gave it a good inspect.
No damage, all working (though can't be 100% on the internals).
I guess a battery change will be needed at some stage.
Lass who worked there agreed that it looked like it was barely worn.
Receipt and manual and box all in (purchased 2017).
Not bad for £150 and it's my preferred style.
It's here on Chrono24 for £700+
https://www.chrono24.co.uk/movado/movado-series-800-blue-dial--id23617066.htm
Will pack it away till my birthday at the weekend.
Not the best photo but you get the gist (you can see the knitted Oxfam hummus socks in the background)....
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