The first is again French from the Paris mint, it was made during the French revolution The word Sous derives from the Roman solidus The second is British and is either a Farthing 1/4d or a Halfpenny 1/2p The George IV halfpenny was produced between 1825 and 1827, weighed 9.1–9.5 grams, with a diameter of 28 millimetres The George IV farthing was produced in two types, between 1821 and 1823, 1825, and 1826 it weighed 4.5–4.8 grams, with a diameter of 22 millimetres, and from 1826–1830 it weighed 4.6–4.9 grams with a diameter of 22millimetres If you are wondering about the 'd' when writing the value of a pre decimal British coin again it comes from the Roman this time the denarius
The first is indeed French, but was minted for Mauritius and Réunion or Isles de France et de Bourbon, as these islands were known those days. Isle de France became Mauritius when it passed to Great-Britain in 1814, Isle de Bourbon was renamed Réunion in 1792, but during the Napoleonic era became de Isle de Bonaparte (1810-1814)
