BWI KM#1 | 1822 | Sixteenth | Anchor Doller | Silver | coin |
BWI KM#2 | 1822 | Eighth | Anchor Doller | Silver | coin |
BWI KM#3 | 1822 | Quarter | Anchor Doller | Silver | coin |
The Ceylon Blue Book of 1823 has the following suggestive entry on page 123
Course of Exchange ... | An England has been various during 1822 |
from 14 4/5 to 15 for the Pound Sterling |
Lowsley does not mention these coins among those he found in 1890 Ceylon. The coins are mentioned by Codrington, and listed by Mitchiner with Ceylon coins. Both 1820 and the 1822 striking were sent in particular to the Mauritius and to the British West Indies (BWI) under which they are listed in Krause catalog of World Coins.
By Regulation 18 of this year it was made illegal to receive or pay for any silver or copper coin being of currency of the Island any more in value, benefit, or advantage than the true lawful value of such coin. On 1822 August 27th, the Spanish dollar was 4 2/3 shillings (56 pennies) or 2 1/4 Rix-dollars (25 fanams).
Text from
* Ceylon Coins and Currency By H. W. Codrington. Colombo 1924
  Page 151 Chapter XI British - I : 1796-1825 .