Hi, tractor owners! I am a new kubota owner having bought a bulltra b1-17 4x4 last week. I am from Greece, and all gray market tractors cannot be driven outside farms hence cannot be registered. However even that is the case i did look for the serial numbers of the tractor. The frame has a 'b1600dt 72724' carved on its side. The serial number of the engine is really well hidden, i haven't found it. My question is regarding the 'b1600' part of the frame serial number. I always knew that this was an older model of the Kubota gray market range, and therefore i am a little anxious to know whether this is normal or whether the tractor is a mix of various tractors. If anyone has knowledge regarding these matters please post in my topic. Thank you