Right EOD, the fuze was made specially for the pictured model S-25-O. The rocket was the final, ultra heavy (250mm), folding fin, free flight, aircraft rocket developed in the USSR in the 60's. The prefragmented warhead delivered about 10000 fragments, enough to disable an entire infrantry battilion. As seen in your picture, the warhead was sticking out of the launcher tube, bcause of its larger dia. The rocket was delivered ready loaded in its wooden PU-O-25 launcher tube (disposable) with metal skin. Would you please translate the exact writing on the fuze ? Any additional information would be appreciated, because this is all info that I could gather up till now. Oh, the specifications: Length of the rocket : 3,775m fin span : 1,05m weight : 370kg warhead : 150 kg, range : 4 km, fuze functions : 5-20m above target. Any additional pictures also would be nice.