This a nice example from this year with a good rim.
The obverse displays some minor flattening but there are still good pearls visable.
Some minor build up age encrustation on the reverse but overall for its age a great addition to your collection.
Design
1911-1936 All Half Pennies in this period were as follows.
Diameter 25.5 mm
Weight 5.67 grams
Edge – Plain
Bronze composition: 97% copper, 2.5% zinc and 0.5% tin.
Obverse: Has a portrait of King George V by Sir Edgar Mackennal
Reverse: The words “ONE HALF PENNY“ within a circle designed by W.H.J Blakemore
History
There were in total 6 varietes of Half Pennies minted between 1911 and 1966 when decimalisation occured.
Mints: H – Birmingham M – Melbourne S- Sydney
Mint Marks: H – Ralph Heaton Birmingham  I – India