Hi Guys,
I bought a lot of mixed watches at an auction today and amongst the lot was this Texas Instruments Quartz LCD wristwatch. I didn't think much of it to start with but on further inspection and with a bit of research seems it might be worth something although i'm not really sure. Any ideas on what model and date it may be would be brilliant.

Could it possibly be the first ever affordable quartz digital watch that i've heard some people talk about?

The only similar watch I have found so far is this one selling on ebay at the moment eBay - The UK's Online Marketplace . I doubt mine is worth this much but I suppose you never know? Any advice or input would be much appreciated!

Here are some pics of the watch concerned:

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Also has anyone got any idea whether it's the original strap?