Middlesex 590, Skidmore's Churches and Gates (Dalton & Hamer, page 158)

Denomination: halfpenny, scarcity: Very rare (RR)
590.  O: ST. GEORGE'S . HANOVER . SQUARE. BUILT . 1724. (Same for Nos. 590-593).
      R: A dove flying with an olive branch, in a wreath. DEDICATED . TO . 
         COLLECTORS . OF . MEDALS & COINS. There are no berries in the wreath,
         excepting at the tips, where there are spikes for them.
      E: Plain.

This was also struck in tin.

No. 590, RR.

Keywords

st george's hanover square built 1724,dedicated to collectors of medals coins