KM 264, 266, and 267 are specified as "1219 (1804)".
KM 262 is "1219 (1805)".
KM 263 and 265 are "1804".
All of the coins have (AH) 1219 on one side and 1804 on the other so all of the coins should be listed the same way in the database.
KM 262: https://en.numista.com/catalogue/pieces38386.html
KM 263: https://en.numista.com/catalogue/pieces49567.html
KM 264: https://en.numista.com/catalogue/pieces22153.html
KM 265: https://en.numista.com/catalogue/pieces64229.html
KM 266: https://en.numista.com/catalogue/pieces50934.html
KM 267: https://en.numista.com/catalogue/pieces30801.html