If its local, I would go see it. Not to sound the 'suspicious' alarm on your purchase, however if I received what you posted and was still interested I would go take a look in person and be sure to grab the serial number and have it checked out before I purchased.
Just make sure you dont come off insulting or acting like you think something is wrong as its possible that the deal is on the level and that nothing is wrong and the last thing you would want to do is ruin someones day.
In the end, at least you will be able to get most of your questions answered.
Good luck, sorry I was not able to give the answer you originally looking for, I just wanted to make sure your not being taken for a ride.