This is a very rare IR (R. Ibragimov) 40 pylon engine from the former Soviet Union (Russia). It is a super high-performance rear exhaust, rear intake engine handmade by Ravel Ibragimov for competition in the 1970s in very very small batches for F3D pylon racing. It is used and this is the condition I got it from a person on RC Groups in Germany many years ago. It is in amazingly clean condition and a rare find, especially in this condition. It turns over very smoothly with minor imperfections. What you see is what you will get. I doubt one will get to buy one of these anywhere, especially if you are a collector of old pylon engines. Shipping with be $10 using USPS Ground Advantage.