There is a gun show going on this weekend and they have a nice Glock 23 I am interested in. Serial number CFH 531 The lady said it was a Gen 3, but so far my research is pointing towards a Gen 2 from the 90's. Anyone able to offer any info as to what generation it is, and when it was made? And if it is a desirable gun? She is willing to take $450, out the door, for the gun.