From what I understand from research, the Marlin No. 42 was manufactured one year 1922. I have seen prices rangeing from $300 to $2200 for a trench gun style 12 Ga. I guess it mostly depends on condition and how much a particular person wants your particular gun.
50-300 USD, 12 gauge pump
50-150 USD
Marlin made these. That brings the value up. Sold my last one to a collector (Marlin) for about 950. It was old but mint and a great shooter
$1,000,000.00
50-250 usd
What is a 12 gauge pump 102.25 worth
well marlin introduced the marlin model 43 in 1922 so mabey when u figure out what you really have you could try another question My Marlin Model 43 12 gauge pump (Model number is stamped underneath, in front of the trigger guard) has Pat. 1908 on the barrel. There is also a patent date of 1922. Looks like Marlin did produce the Model 43 earlier than the 1922 date you have.
140-200 dollars,depending on overall condition and a good bore.
100.00
what is a. jc Higgins pump shot gun. model 20-12 gauge worth??
50-150 USD
Look up the Marlin shotgun with the same model number.