That's a Mark II Jaguar. Late 50's. That was the top of the line middleweight at that time. Looks like a coaster brake model. Usually these bikes are 3 speed Sturmey Archer or 2 speed Bendix. Bike looks original and complete except for the headlight. With the tank and both racks, that is a real good find. Tank is at least a $100 item. Racks are another $100. The seat is probably worth $50. The fenders are stainless steel and will never rust like chrome. Lots of good parts. 8) I'd pay maybe $150 for it. Gary