From this shared wisdom, we can deduce the following:
: Proves the gun was made during the late 1960s or 1970s Winchester era. 2. Gauge and Chamber Markings Cooey Model 840 Serial Number Lookup
Q: What is the production date range for the Cooey Model 840? A: The Cooey Model 840 was produced from 1948 to 1961. From this shared wisdom, we can deduce the