The Jamaica 1sh inverted-frame error was discovered in March 1922 at the post office

Post office

A post office is a facility forming part of a postal system for the posting, receipt, sorting, handling, transmission or delivery of mail.Post offices offer mail-related services such as post office boxes, postage and packaging supplies...

 in Manchioneal, a village in the parish of Portland. It is definite that an entire sheet of 60 stamps on multiple CA paper existed but only half of this sheet was sent to Manchioneal. The majority of these were possibly used for fiscal purposes

Revenue stamp

A revenue stamp, tax stamp or fiscal stamp is a adhesive label used to collect taxes or fees on documents, tobacco, alcoholic drinks, drugs and medicines, playing cards, hunting licenses, firearm registration, and many other things...

 because Manchioneal was a banana trading centre and buyers may have used the telegraph office to confirm purchases. The other half of the sheet was possibly sold over the counter in Jamaica's

Jamaica

Jamaica is an island nation of the Greater Antilles, in length, up to in width and 10,990 square kilometres in area. It is situated in the Caribbean Sea, about south of Cuba, and west of Hispaniola, the island harbouring the nation-states Haiti and the Dominican Republic...

 capital, Kingston, as a copy with a Kingston

Kingston, Jamaica

Kingston is the capital and largest city of Jamaica, located on the southeastern coast of the island. It faces a natural harbour protected by the Palisadoes, a long sand spit which connects the town of Port Royal and the Norman Manley International Airport to the rest of the island...

cancellation exists.