What is value of Sheridan Produces 20 cal single shot air pellet gun?

Answer 1

In order to give you an estimate of value. I need to know a few more details like, The model number. Sheridan made 5 different pellet guns and 7 different rifles. The 5 pellet models are E, EB, ED, HB and H20PB. Which one is yours?

Is it still working?

What condition is it in. Poor, Fair, Good, Very Good or Excellent (Like new)

without this information No estimate of value can be given.

In 1977 Benjamin airgun purchased Sheridan, In 1992 Crosman purchased Benjamin. Crosman owns Sheridan today. Sheridan and Benjamin look similar. All the .177 and .22 Caliber rifles are marked Benjamin. All the .20 caliber rifles are marked Sheridan. Other than caliber the two models are identical.

If you want the owners manual for your pistol a link can be found on the Crosman home page.