Testors McCoy .35 Series 21 Model Airplane Engine

Got this vintage Testors McCoy 35 Series 21 engine. It's a classic glow engine for RC planes or control line stuff. It comes in the original box which is pretty cool for a collector, though the box has some wear as you can see. The engine itself looks decent but I havent tried to run it or anything so selling as is. Great piece of hobby history if you're into old school model engines. There is no needle valve assembly. Motor turns over and has compression