It should be a shooter, if it's in good shape, that price isn't bad! The second letter of the serial number denotes the year of manufacture, first letter N denotes NEF, and H means Harrington & Richardson...Make sure the barrel is etched on the left side of the underlug with the last 3 digits of the serial number of the frame. If it is, chances are it's a factory fitted barrel. Check to make sure it locks up good and crisp, tight... you shouldn't have to slam it closed. There should be no visible gap between the standing breech and the barrel when you hold it up sideways in front of you with it backlit.
K=1996
L=1997
M=1998
N=1999
P=2000
R=2001
S=2002
T=2003
U=2004
V=2005