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 )
Last edited by surveyor; September 15, 2011 at 09:13 PM.