It is a 211 E. This makes it a first year engine. It turns over free but does not have compression.The item "Vintage REO Motors Gas Engine Model 211 E Vintage Go Kart 1951 Hit Miss Show Old" is in sale since Monday, July 8, 2019. This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Outdoor Power Equipment\Multi Purpose Engines". The seller is "onabranch" and is located in Hoyleton, Illinois. This item can be shipped to United States.