Originally posted by West Penn I would be a bit suspicious if there are no other marks or some kind of damage around the area where the serial number should be. Can's see anyone removing the serial number unless you've got something to hide.
Also, perhaps if you check in the set-up menu, the previous owner may have entered his/her name as the artist or copyright holder.
You can download the "exiftool" app (do a google search) which will allow you to obtain the "Internal Serial Number" of the camera. It's not the same as the external number, however. The internal number may be used to track down someone who has stolen a camera and subsequently posts photos from it online. You can put a shortcut to the app on your desktop and then simply drag-and-drop an image taken with the camera into the shortcut. The exif data obtained also will show the exact shutter count, which may differ from the photo sequence number being shown on the sd card.
Being trusting by nature, I'm hoping for the best and hoping it is just as I said that when they refirbed the camera they swapped out the base and didn't change over the Ser. No. sticker.
I downloaded "PhotoME" and looked at the internal serial number but that only gave me a 5 digit number (instead of a 7, like my k-2000.) And, the shutter count on the first picture I took with the camera was 277 wile the image count was 9460... (After a day of shooting about 35 pictures, the shutter count when down to 271...)
But, I did contact Pentax and they may be able to give me more info, as well...