70years old priceless
J.C. Higgins Model 20
Mid 1950's. Value up to $140. http://www.histandard.info/PDF/Sears%20Rifles.pdf
1945-1959. Value up to $75.
The Winchester Model 12 was never sold under the JC Higgins name.
made by Marlin for Sears 1959 to 1962
made in 1958 and valued between 150.00 and 200.00
Blue Book of Gun Values
The value of a JC Higgins Rifleman Senior 2.5x scope typically ranges from $50 to $150, depending on its condition, age, and market demand. Collectors or enthusiasts may pay more for a well-preserved or rare model. To get a more accurate estimate, consider checking recent sales on auction sites or consulting with firearms appraisers.
Without a model number and the condition of the gun, impossible to answer.
1950's-1960's
No sn data published; 10-150 USD or so
Don't know value. Year of manufacture is 1990.