This is an easy one
1827 (all these were taken along with the prisoners to Australia and became corroded on the boat over...many have verdigris...the finest known sold for £15,000 about 4 years ago)
1843 (with or without a colon after letters REG on the back)
1849
1856 (two types - OT = Ornamental Trident and PT = Plain Trident) both are rare
1860 over a 59 Big copper penny - very rare - just 400 struck....£2000+
1864
1869
1870
1871
1875 H (small H under the date referring to the Heaton Mint of Birmingham)
1895 2mm (the trident is held 2mm from the P of Penny
1918 H (small H to the left of the date referring to the Heaton Mint of Birmingham)
1918 KN (Small KN to the left of the date referring to the King's Norton Metal Company of Birmingham)
1919 H (small H to the left of the date referring to the Heaton Mint of Birmingham)
1919 KN (Small KN to the left of the date referring to the King's Norton Metal Company of Birmingham)
1926 ME (modified head of George V.....initials BM without dots)
1933 (just 7 known.....one sold in 2009 for £80,000 privately)
1952
1954
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All years of issue of the British decimal 1 New Penny and 1 Penny coins are still potentially in circulation so, unless they are part of a Proof or Uncirculated mint set or are individual Proof or Uncirculated coins and in absolute mint condition, they are worth 1 Penny.
A British 1971 to 1981 bronze 1 New Penny coin (Elizabeth II), uncirculated and in absolute mint condition could fetch up to £0.20 GBP.
A reputable coin dealer will be able to give a more accurate valuation.