The Dan Wesson Model 15-2 with the serial number B005158 was manufactured in 1976. Dan Wesson revolvers typically have their production dates determined by their serial numbers, and the B series generally corresponds to that time frame. For precise information, consulting a Dan Wesson historian or reference guide may provide additional details.
@1969
1977
1969
No serial number given = no answer.
1979
You will have to call S&W
1986
You must call S&W
80-81
You must call S&W
Call S&W with the serial number and they will tell you.
You will have to call S&W for the date.