HERE IS A REALLY COOL DISPLAY FROM PERFECT CIRCLE PISTON RING SERVICE THAT HELD THE PISTONS, INTAKE AND EXHAUST VALVES IN POSITION WHILE THE ENGINE WAS BEING ASSEMBLED. VERY EARLY AS YOU CAN TELL BY THE PHONE# AND IT IS ALSO MARKED PAT. PENDING AND WE ALL KNOW PERFECT CIRCLE HAS BEEN AROUND FOR A LONGGG TIME! THE WOOD IS ALL STAMPED WITH THE # TO HOLD THE PISTON, THE INTAKE VALVE AND THE EXHAUST VALVE IN THE PROPER PLACE. $475 SHIPPED CHECK OR MONEY ORDER.
