British Sixpences date back for hundreds of years and there are entire books filled with this sort of information.
A rule of thumb is that any Sixpence in mint condition dating prior to 1910 is likely to get a good price.
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.
Not much, a British 1954 sixpence would be worth about 15p or so at the most today unless in exceptionally good shape.
Good luck if you have one, but the last British Sixpence was minted in 1967.
16.5 pence
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 "Tanner" is a British colloquial term for a Sixpence. A "Halfcrown" is Two Shillings and Sixpence. There are five Sixpences (Tanners) in a Halfcrown.
$1.50
2.5 pence
The value of a 1949 Sixpence coin depends on its condition, rarity, and demand from collectors. In general, a 1949 Sixpence in average circulated condition may be worth a few dollars, while one in better condition or with unique characteristics could be worth more to collectors. It's recommended to have the coin evaluated by a professional coin dealer to determine its exact value.