The medal depicts more than just the Dundee coat of arms, it is the flag of the Lord Provost(Mayor) of Dundee. I have been unable to find a Dundee Lord Provost by the name of Robert Doyle but I have found a city councillor of that name....
"In May(sic 1967)after the council elections, a new committee was formed under Lord Provost Alex MacKenzie with Baillies J.M. Gillies and Kames Walker, and councillors George Soutar, Robert Doyle, J.L. Stewart, A.J. Thomson and Harry Dickson as the members".
Ref: https://www.chessscotland.com/documents ... e_1967.htm
I would expect that the medal would be worn by the Lord Provost while performing ceremonies, but wonder if there is a possibility that they were also given to council members(seems unlikely to me, but you never know), or that Robert Doyle later became Lord Provost.