1935 RAOB (THE ROYAL ANTEDILUVIAN ORDER OF BUFFALOES) SOUVENIR STERLING SILVER & ENAMEL KING GEORGE V & QUEEN MARY SILVER JUBILEE BADGE.
The badge issued in to commemorate the 25th anniversary of King George V’s coronation. Jubilee day took place on the 6th May 1935 .
 
The coronation of George V and his wife, Mary, as king and queen of the United Kingdom and the British Dominions took place at Westminster Abbey, London, on Thursday 22 June 1911. 

Reverse engraved : BRO.  HEAYNS  K.O.M

Jubilee Hallmark - BIRMINGHAM 1934
Makers mark: F&S - Fattorini & Sons Ltd (Retailers specialising in "medals, shields, trophies, cups & badges, Bradford, London, Birmingham & Glasgow).

Measures approx.:
Length - 43mm (1.68 inch.)
Width - 26mm (1.02 inch.)
Weight - 6.5g