It does look real, likely a reference 391.0013 based on a quick search on google.
It looks real. It looks to be a quartz model from circa 1977- 1982. All the info you need is stamped into the interior of the caseback. If it’s steel it’s not all that exciting and worth a couple of hundred bucks. If it’s in fact white gold it’s worth its gold value plus maybe $100.
Thanks for that. At the stage where a battery is lasting a year tops but costs £60 so at the point where it’s not sensible to keep replacing it. Nice watch though so shame not to use it ♂️. Cheers.