This is a 1947 McCoy Red Head Jr. with spark ignition, black anodized case and red anodized head. It includes a champion V-3 spark plug. Serial number on this engine is 9049. This engine appears to be in 'like new' condition with no evidence that it has ever been run that I can see. Case screws show no tool marks. Mounting holes look like it has never been mounted. The only modification is that the exhaust port has been shaved. It appears to be well done & possibly professionally machined as the outer surface has a factory-like ground finish with a slight curve. See pictures below for details. This is a very clean, original condition engine that looks even better than the digital images show.
I am liquidating my collection & will have several great engines available for bids.