I bought a machine today for $80. The cabinet is apart to be refurbished which works for me as I have to drive 800 miles in a sentra and it will be tight. The Serial number is 3728028. I wrote this number down myself and I don't remember a letter in front of the number but then I could have been having a senior moment when I wrote it down. Were redeyes made in 1880? For some reason, I am having trouble locating this little piece of information. Would someone be so kind to point me in the right direction pretty please?