Sometimes referred to as the Flyweight division, the paperweight division--95 lbs. and below (less than 43.2 kg; or 6 stone, 8 pounds)--was first established by the Queensberry Amateur Championship and ABA as 95 lbs and less (in 1880). In time the paperweight champion became synonymous with the bantamweight or flyweight champion, although the weight actually was increased 17 pounds by London's National Sporting Club around 1896-1898.
Called "Paperweight" in England: 109-112 lbs; 49.5 – 50.0 kg; or 7 stone, 8 pounds – 8 stone. Introduced in 1909 by the National Sporting Club to cover all weights up to 112 lbs (50.9 kg or 8 stone). English boxing authorities followed suit and set the weight limit as 108 lbs (49.1 kg or 7 stone, 7 pounds in 1910). New York’s Walker Law next established the weight class (in 1920) as 112 pounds. United States boxing commissions NBA and NYSAC recognized this weight class (in 1927).
The first British Flyweight Champion was Charlie Exall (in 1898); first World champion Jimmy Wilde (in 1916); first Commonwealth champion Elky Clark (in 1924); first NBA champion Fidel LaBarba (in 1925); first NYSAC champion Corporal Izzy Schwartz (in 1927); first WBA champion Fighting Harada (in 1962); first WBC champion Hisoyuki Ebihara (in 1963); first IBF champion Soon Chun Kwon (in 1983); and first WBO champion Elvis Alvarez (in 1989).