It depends on the condition. You must give it some sort of rating from Poor to Excellent condition in order to get an estimate of value.
The Sheridan Silver streak air rifle was made from 1949 up to the 1990's after that it became the Blue Streak.
It was made in 1975
Around $100 in good condition.
Sheridan made several C series rifles. I assume that you are asking about the C Silver Streak. Not the C9 Sliver Streak. In order to give you an estimate I need to know the condition of the rifle. Does it still work? Does it hold air. What condition is it in? All these determine the current value.
It all depends on age, use, and condition of the rifle. Is it in Poor, Fair, Good, Very good or Excellent condition. Sheridan made 4 different model C series. The C Silver Streak, C9 Silver Streak, CB9 Blue Streak, and C9BP. Which one are you asking about?
In order to give an estimate of value I need to know the current condition of the rifle.Excellent to poor ( Give it a rating?)
Here is the link to all of the manuals for Sheridan and Benjamin. Crosman owns Sheridan and Benjamin See the link below.
There are 3 versions of the Sheridan Blue Streak. See the link below for the 2nd version. BTW today Crosman owns the Sheridan and Benjamin line of air guns. This link is from Crosman
The Blue Book of Airguns has the info you need. Also, all Sheridan Streaks are .20 caliber, not .22 caliber.
The Blue Streak has been in production from 1995 to present. If you want more Information I suggest you contact Crosman who owns both Benjamin and Sheridan. See the link below.
Sheridan made their first air rifle model in March 1947 so I don't believe yours could be from the 1930, more likely it was made sometime after 1972. The Sheridan model is a 20 caliber rifle not a .177 or .22 caliber like it's cousin the Benjamin model 392. The current Sheridan Blue Streak, CB9, sells for $190 at present. In order to give you an estimate of value I need to know the current condition of the rifle. Is it still working and holding air? Is it in Poor, Fair, Good, Very good, or Excellent condition? without more information it is not possible to give you an estimate of value.
It would be worth between $65 - $80