50-100
1968
Your Glenfield model 75C will go for between 50-75 dollars on today's market.
$50-$75.
I found the value of a Marlin/Glenfield (similar serial) to be at about $2,700. I'm looking too, but that's the price I was able to find.
1980, about $175.
Around $100.
With no serial number provided,I cannot determine the age of your Glenfield model 60 semi-auto .22cal rifle.The value of these rimfire rifles is between 60-110 dollars.
1982 production, $200-$225 in excellent condition. sales@countrygunsmith.net
The Glenfield model 25 wasn't a Marlin, so determining what it actually is is not easy. Obtain a copy of Modern Gun Values and try and determine the actual manufacturer. A Glenfield version is typically worth 75% of the manufacturer's value.
Doublecheck your information. No Glenfield Model 1.
1982 production, $200-$225 in excellent condition. sales@countrygunsmith.net