1951 United Kingdom - Farthing
The 1951 UK farthing obverse features the bare head of King George VI facing left, with the surrounding legend: 'GEORGIVS VI D:G:BR:OMN:REX FIDEI DEF.'
The reverse shows a wren, (a small native bird of Europe - Eurasian Wren), facing left. The date is above the main design, and the word 'FARTHING' below.
A diameter of 20mm, and a weight of 2.75 to 2.9 g.