This Double 10 as 3 others, were sent to me directly from Stuart Turner in the 80's wrapped in oiled paper as seen in the pictures. This is the last one, which will be sold on Ebay, with a set of Stuart unions and lubricator. This is a vey quick test because the engine will be run without any lubricant, just as it came. The engine runs very smoothly self starting from 0.3 bar upto 0.5 bar in perfect silence.