Following the name of the champion(s): Indicates the number of times the competitor has held that title at that point.
[...]
Indicates a gap in the listing where title changes are not known.
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Title was held or changed hands no later than this. In these cases, it is known that a competitor held the title at a certain time but not when he/she won it.
@
Order uncertain. Different titleholders may be known for the same year, for example, but it is not known who held the title before whom.
#
Unofficial or disputable claims. These are usually matches that certainly took place, but where there is doubt that the competitor shown should be recognized as a true title holder. These listings are also italicized.
World Junior Bantamweight Title [unlineal / disputed versions]
* Bolded letters in the competitor's name, if any, indicate the surname/family name.
David Montrose / Newsboy Brown (David Mondrus)
1924-10
"Declared junior bantamweight champion of the world by the New York boxing commission" (Sioux City Journal, Sioux City, IA, 24-10-30) although NYSAC does not yet recognize the title at the time; still claims the title as of 25-10-07.