25-125 usd
$200 to $800, depending on exact model and condition
about $200 max
$1000- $2000 depending on model and barrel length
20-50 USD
You have a third model Winchester model of 1876.This rifle will range in price from 1,500 dollars for a rifle with 10%of its original finish to as high as 7,500 dollars for a rifle exhibiting 60% of its original finish.
You need to seek a professional appraisal
$200 to $500 depending on condition.
about $200 if very clean
The Stevens "Springfield" Model 83 was manufactured from 1935 to 1939. Value is between $40 to $75.
There is no such thing as a "Winchester 1884". There were two distinctly different Winchester Models that were made to chamber the 32-40 cartridge; (1) The Model 1885 Single Shot (falling block) Rifle (2) The Model 1894 Lever-Action Rifle The potential collector value for each is significantly different.
Minimal value 40-100 USD or so