JC Higgins sold over 50 different BB and pellet guns/rifles over the years. They were made by Crosman and Daisy. You need to give more information like the model number in order to identify the air gun.
Proofhouse.com has a store brand chart. When you find out who made it a value can be estimated.
I believe your rifle is a Marlin Model 80 made for Sears.
marlin
The rifle was a Henry repeater.
What is a Winchester model 74.22 repeater rifle, circa l939, worth?
100-300 or so
The Stevens model number 70 Visible repeater was made from 1912-1931.
Check the model number. If it starts with 799. it was made by Daisy. If it starts with 126. it was made by Crosman. If it is a Crosman (126.) model then Crosman offers a locater service (Free) to locate repair shops that repair older Crosman airguns. If it's a Daisy (799) model then I suggest you contact Daisy and ask them.. See the two links below.
Between $125 - $165
Your rifle is a Marlin Model 80. They were made from 1934 up thru 1969. No serial number indicates made before 1968. Early rifles had open sights, later had a rear peep sight.
The Hahn Super Repeater was marketed by Crosman, who also furnished air rifles to Sears. Possible. New Answer 3/30/2008 Yes Crosman made the same rifle (Hahn Super Repeater Model 166) for Sears under the JC Higgins name. Value Apx: 100%=$125 to 60%=$45
The 30.06 model 770 is a bolt action repeater with a magazine capacity of 4 and one in the chamber.