1937 AD., United Kingdom, George VI, Royal Mint, 3 Pence, KM 849.

United Kingdom of Great Britain and Northern Ireland, George VI, engravers: Thomas Humphrey Paget (obverse) and Frances Madge Kitchener (reverse), Royal Mint, Tower Hill Site, London, Great Britain (1809-1967), 1937 AD.,
3 Pence (ø 21-22 mm / 6,73 g), nickel-brass (70% copper, 24.5% zinc, 5.5% nickel), dodecagonal (12-angular, 12-sided), 6,80 g theor. mint weight, mintage 45.707.957 , axis medal alignment ↑↑ (0°), plain edge,
Obv.: GEORGIVS VI D : G : BR : OMN : REX F : D : IND : IMP. / H P , (George VI Dei Gratia Britanniarum Omnium Rex Fidei Defensor Indiae Imperator, translation: by the Grace of God king of all British, Defender of the Faith, Emperor of India), his head facing left, engraver´s initials below trucation.
Rev.: THREE PENCE / 1937 , a three-headed Thrift plant (Armeria maritima, sea pink).
KM 849 ; Spink 4112 .

Date / Mintage / Details
1937 45.707.957
1937 4 Matte Proof
1937 26,000 Proof
1938 14,532,300
1938 Proof
1939 5,603,000
1939 Proof
1940 12,636,000
1940 Proof
1941 60,239,500
1941 Proof
1942 103,214,400
1942 Proof
1943 101,702,400
1943 Proof
1944 69,760,000
1944 Proof
1945 33,942,400
1945 Proof
1946 620,734
1946 Proof
1948 4,230,400
1948 Proof

Thrift (plant): Armeria is a genus of flowering plants. These plants are sometimes known as "lady's cushion", "thrift", or "sea pink" (the latter because as they are often found on coastlines). The genus counts over a hundred species, mostly native to the Mediterranean, although Armeria maritima is an exception, being distributed along the coasts of the Northern Hemisphere, including Ireland, parts of the United Kingdom such as Cornwall, and the Pembrokeshire Coast National Park in Wales.

More on https://en.wikipedia.org/wiki/Armeria