50-100 USD
Iver Johnson Arms and Cycle Works made a champion model shotgun.
No more than 100 USD depending on condition.
Iver Johnson
Lack of demand
Sometime in the 1880's.
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50-100 USD
Ivory johnson 16 guage chamion shot gun
$50-$125
My best guess is $350
There needs to be more detail - there are at least four guns you could be talking about and condition of the gun is critical. It could be a Champion Model 36, Champion model 39, or Champion model 39 - Junior, or Excel. Roughly $75 to $300.
I would pay as much as $400 for a very clean 28 gauge Champion. Condition is the key. Jim Spear 251-981-5788