A British Sixpence in 1805 has the purchasing power of about £1.40 GBP today.
A sixpence was worth 1/40 of a pound so it would be worth about $.04. (1/40 of $1.61)
Under pre-decimal currency in the UK, a shilling was worth twelve pence, and a sixpence worth six pence. The UK adopted decimal currency in 1971.
There were no nickels yet in 1840.
16.5 pence
Good luck if you have one, but the last British Sixpence was minted in 1967.
A sixpence is worth 0.25 GBP, so in Dutch that's 2.5 cent. There isn't really a word for a sixpence, as they never had that kind of coin. Also, the British sixpence coin was illiminated decades ago, so it no longer exists.
The exchange between a sixpence and American money varies widely on how well the market is doing. Currently, a sixpence is now only worth one U.S. penny.
A British 1840 Sixpence, uncirculated and in absolute mint condition could fetch up to £225 GBP. If it has been circulated but still in good condition, it might fetch anything from £10 to £80 GBP.A reputable coin dealer will be able to give a more accurate valuation.NOTE - The reverse of these coins is upside down to the obverse. This is normal.
A "Tanner" is a British colloquial term for a Sixpence. A "Halfcrown" is Two Shillings and Sixpence. There are five Sixpences (Tanners) in a Halfcrown.
2.5 pence
$1.50