What is the age and value of a cooey model 840 serial number 79487?

The Cooey Model 840 is a Canadian-made .22 caliber rifle that was produced from the 1960s into the 1980s. Given the serial number 79487, it is likely from the early to mid-1970s. The value can vary significantly based on its condition, but typically ranges from $150 to $300. For an accurate appraisal, it's best to consult a firearms expert or a recent sales database.