the best I can do is say that your Winchester model 290 was made between 1963-1976.
On the bottom of the rifle in front of the trigger assembly
your Winchester model 290 was apart of the 200 model series which included the model250 270 290 255 275.the model 290 were made between 1963-1976.the total production of all models were 1,600,000.With your serial number I would guess around 1970.
The Winchester model 290 was made from 1963-1976.That being said serial numbers were not required until the passage of the gun control act of 1968.I can say that your rifle was made before 1968.
Proofhouse.com has Winchester sn tables.
The Winchester model 290 belonged to the 200 series of .22cal rifles.This included the model 250,270,290,255,and 275 models.Winchester did not keep records of the serial numbers on these rifles.I can say that these models were introduced from 1963-1965,and the model 290 was discontinued in the year 1976.
winchester did not keep records of the serial numbers by year of manufacture for the 200 series of rifles in which yours belongs.I can say that the model 290 was made from 1963-1976.
Winchester did not keep records of the serial numbers by year of production for the Winchester model 200 series of rifles.These models(250,270,290,255,and 275)all qualify,I can say that Winchester made the model 290 from 1963-1976.I hope this helps?
The 200 series of rifles by Winchester(250,270,290,255,275) were made from 1963-1976,of which yours is included.Winchester did not keep serial number records of the models by year of production.There were a total of 1,600,000 made of all models during this time span.If I had to say I would put a date of 1966 on your model 290 Winchester.
Made @ 63-76 with @ 1.6-2.1 mil made in the 200 model series.
Your Winchester model 290 deluxe rifle is going for between 90-200 dollars depending on the amount of original finish and condition.
Winchester did not keep records of the serial numbers by year of production for the 200 series of firearms of which yours is one.I can say that the model 290 was made from 1963-1976.