I bought #438 from its original owner up in Boston and brought it here to Atlanta a number of years ago. It's in pristine condition- I've replaced the pipe with a SIP Road 2.0, upjetted it, and have corrected a few other relatively minor maintenance issues.
The only 'special' thing about this scooter, other than the 'Serie America' badge is the color. Though I've never confirmed it, I heard that they only brought 1,500 of these 2005 px150's to America, and 500 of them were this Vintage Verde. So if it's true that they only imported 1,500 - and 500 were green, that would leave just 1,000 for the red, black, and silver models they brought here, making the green not so limited
I love it though- pretty classic.... truly, "the last of the great two strokes" !