First post ..

Hi everyone first post so don't be to harsh,

I have just purchased a .22 stingray first air rifle in 20 years I was wondering if anyone could give me a date of manufacture. I intend to give it a bit of a restoration job,
883960 is the only numbers I can find on it I have searched the internet with out success, reading the treads on here as lead to a blank unless I missed one.

Could anyone help please..