The N2 and N5 prefixes were used mostly for the M 28's and 58's and ran for a longer time period.I'm unsure about manufacture dates on these, any help would be appreciated.
I can't track them down in my 3rd SCSW.. mentions the serial #s split in the last half of the series.
N242XXX (28-2) (1974-1977 )
N537xxx (28-2) (1978-1980 )
1979.Model 10-8 Heavy barrel 5D95xxx
It could be one of three possibles:the number is 681675
1977.model 67-1 with the serial number of 22K3xxx
1986/87.ALV8372
1973.4K19XXX
1950.K-22 Masterpiece Serial# K 879XX
Around 1990.m36-7 Serial # BFB40xx
The SCSW only covers up to 2004. Both your SN's are post 2004.One serial # begins with CPH, the other with CRA
The SCSW does not break down the Performance Center SN's. It only mentions the Shory Forty as running thru 1992, 93 and 95. However, as above, you can call S&W's customer service and they will give you the DOB over the phone for free.4006 Shorty Forty, SN PCS11XX
CAM started in Jan 1996 so CAL is likely very late 1995.Serial # is CAL3xxx
The SCSW only covers up to 2004. Your SN is post 2004.CJX86XX
1980.serial number is 6D64391