Sheridan did first make air rifles in the 1960s.
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The above answer is total wrong. Sheridan started making air guns in 1945 and the first rifle was the model "A" made in 1947.
Sheridan air rifles who is owned by Crosman Sheridans are 5mm air rifles
Originally Sheridan, Benjamin and Crosman were 3 separate companies. Benjamin bought-out Sheridan. A few years later Crosman bought-out Benjamin. Today Crosman owns all 3 companies. In 1975 Crosman started serial numbering Benjamin / Sheridan air rifles. Before that (1975) it is not easy to identify the year the Benjamin or Sheridan's were made.
Crosman owns Sheridan and Benjamin air rifles. They offer a ring base for the Sheridan it's part # B272 and clamps right on the barrel of Sheridan and Benjamin rifles and pistols. You can order them through Crosman, Airgunsofarizona or Pyramydair. They cost about $14.00
Sheridan was very haphazard about numbering and naming there models. In 1977 Benjamin bought the Sheridan line of air guns later Crosman bought both Benjamin and Sheridan. Some models actually say Benjamin Sheridan on the rifle. Sheridan who had been around since 1945 finally started numbering their rifles in 1972.
A short history. Benjamin air rifles and Sheridan air rifles once were separate companies. Sheridan developed the C9 20 caliber series of rifles. Benjamin bought Sheridan and continued to make the C9 20 caliber series rifles. They also made a .177 and a .22 caliber C series rifle called a Benjamin. Crosman bought out Benjamin (in 1992) and decided to continue making the C series. With the name Sheridan on the .20 cal rifle and Benjamin on the .177 & .22 cal rifle some rifles also had the Crosman name on them. ( confused enough?) During all this confusion and name changing the C9A came along. I have 4 reference bluebooks on air guns and not one of them can give me a date for the C9A, But Crosman has a web page that list manufacture dates by serial number for Benjamin and Sheridan. (See the link below) when it opens scroll down to the Sheridan dates. (the first part is all Benjamin) Hopefully you have the serial number and can match the number with a date of manufacture.
Sheridan ------------------- Correct answer ----------------- In 1977 Benjamin purchased Sheridan air gun Co. In 1995 Crosman purchased Benjamin Air gun Co. Today Crosman owns both the Sheridan and Benjamin name and line of products. Crosman decided to keep the Sheridan name on the 5 mm air rifles and the Benjamin name on the .177 and 5.5 mm air rifles. Crosman produces the pellets for all three products.
today. Crosman corp owns both Sheridan and Benjamin air guns / rifles. See the links below.
Benjamin Sheridan makes both .22 and .25 caliber pellet guns. ----------------------Corrected answer---------------------------------- Crosman air gun company owns both the Benjamin and Sheridan line of air guns and rifles. The Benjamin rifles models are made in .177, .22 and .25 caliber. The Sheridan line is only made in .20 caliber. The name "Benjamin Sheridan" is no longer placed on any one model. In the past Benjamin did make a 20 .cal pellet gun Benjamin also makes a .357 caliber model named the Rogue.
Sheridan (Owned by Crosman) has made 4 variations of the C9 since 1995. A short history. Benjamin air rifles and Sheridan air rifles once were separate companies. Sheridan developed the C9 20 caliber series of rifles. Benjamin bought Sheridan and continued to make the C9 20 caliber series rifles. They also made a .177 and a .22 caliber C series rifle called a Benjamin. Crosman bought out Benjamin (in 1992) and decided to continue making the C series. With the name Sheridan on the .20 cal rifle and Benjamin on the .177 & .22 cal rifle some rifles also had the Crosman name on them. ( confused enough?) During all this confusion and name changing the C9A came along. I have 4 reference bluebooks on air guns and not one of them can give me a date for the C9A, But Crosman has a web page that list manufacture dates by serial number for Benjamin and Sheridan. (See the link below) when it opens scroll down to the Sheridan dates. (the first part is all Benjamin) Hopefully you have the serial number and can match the number with a date of manufacture.
Crosman co owns Benjamin and Sheridan. They supply parts for current and some older model Benjamin air rifles or they offer a service to locate someone who repairs older Benjamin rifles. See the link below. When it opens click on "Find a service center."
Crosman ( Who owns the Sheridan and Benjamin line of air guns) Sells the mount you want.See this link http://www.crosman.com/optics/optics-accessories/4-piece-intermount-for-benjamin-sheridan-rifles-and-pistols
First of all thank you for posting a question with all the information I need to answer it. Most questions just ask "How much is my air rifle worth." without any additional information. Your sliver streak, in excellent condition is worth around $190. A bit of history: Sheridan, Benjamin and Crosman at one time were three different companies. in the 1970's Benjamin bought out Sheridan and continued to market the Sheridan name on the .20 caliber rifles and the Benjamin name on the .177 & .22 caliber rifles. Later Crosman bought out Benjamin and now makes all three lines of air rifles. In 1972 Sheridan started serial numbering their air rifles. Today Crosman has that list. (See the link below) http://www.crosman.com/cs/dates-benjamin