Only 6 Jacksonville, Florida handstamp named labels recorded (Scott FX-JA2). This is the sixth one found and has been added to the census.
Large 2-cent stationary with a pair of 2-cents Washington and a 10-cents Webster (#283) First Bureau Series stamps. The 16-cents of total postage paid the registry fee (8-cents) and four times the domestic rate of 2-cents/ounce. Cuba was a U.S. Possession in 1902 and benefited from domestic postal rates.
Only one FX-JA2 exchange label has sold recently (that I could find).
https://www.rumseyauctions.com/search/p/0/start/SaleNo/0/0/0/usa/FX-JA2/0/0/0/sc/0/0/0/0/0/off/off/off/9/1/desc/25
The cover conditions is rough! Please check the scans and ask questions.
Fun fact, Tupelo, Mississippi is the birthplace of Elvis Presley