I purchased a really nice early sandcast today. Its frame number is cb750-1001977 engine is cb750e-1002091. I checked the case in front of the sprocket and its solid no chain holes. The bike was very customized has Lester's and a cool fairing. The paint on the frame is very nice you can tell this bike was well cared for. It has a wrinkled tank and number 8 bolts everywhere. It also has the 9 hole clutch cover and recessed ignition switch. Now to get it running.