UK Sixpence, 1937 (Not in circulation)

Sixpence I have got following coin from The Royal Mint, this is literally the only coin I paid for. Rest of the collection are from general circulation and coins I have acquired over the years by different means (travels etc…) In this coin, Reverse: FID.DEF.IND.IMP, 1937 Obverse: GEORGIVS VI D : G : BR : OMN…