Prior to 1965, the serial numbers for all Bear bows were started over every month, making these bows almost impossible to date by serial number alone. This serial number works very well for dating Bear Bows from 1965-1969 when the first digit of the serial number is the year of manufacture.įor example, a serial number of 5L212 would be a 1965 Bow. The Serial Number: These bows usually have, what appears to be a hand inscription on one of the limbs that gives a serial number along with the length and pull weight of the bow. There are several features and changes that were made to the bear bows over the years that will help narrow the age of your bow or your potential investment.ġ. I've got a Fred Bear Grizzly and a Cub from the same timeframe, so I looked around the Internet and found this.