Well, the manufacturer warranty thing is not unusual. I assume you are in the USA? See, retailers bought these phones...which enacted all the warranties on them, since they are not offered through carriers here in these United States...Some of them have been sitting on shelves for some time.
Even if the warranty were good for some time, it wouldnt do ya any good, as Motorola US doesnt service the phone. They need to go back to Hong Kong for service...Really, all the warranty info is telling you is that it is a LEGITIMATE A1200...as opposed to some knock off.
46P is a standard FW. This was a release on the generic A1200's. It likely has never been modded. There are FW's with better batt life, though.
Also, getting a car charger would be a treat! Most do not come with them.
Hope that helps!