They're desperately hoping they'll find it before their wedding anniversary.
Ross and Dorothy Vickers celebrated their Golden Wedding Anniversary in 2015, pictured here with a photo from their wedding day in 1965.
The ring has a single diamond on a gold band with the engraving 'DJP - RDV 18/08/1964', the couples initials and the date Mr Vickers proposed. The couple's friend, Anni Bufton, said of the pair:"They're a wonderful couple, if anyone wants to see what life long love looks like, you just have to look at Ross and Dorothy. They're like teenagers, it rubs off on you.
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