Originally Posted by Bullpup adict
Does this mean I should hang on to my G17 serial ARM053US.
Does it make it worth more than the $489.00 I paid for it?
No, that's a Gen 2 pistol. Gen 1s were over before they got half-way through the 2-digit alpha prefixes.
The value on your pistol depends on a lot of things, including, where in the country you are, the condition, and if it still has everything with it. In my part of the country, a used Gen-2 G17 is a $400 gun, TOPS (in perfect, near-new shape with all accessories).