revell bought the old frog Axis moulds when frog closed down, as when novo took over to send the moulds to Russia they were told that no Axis aircraft would be accepted,due to this 4 moulds were made by frog of famous Russian aircraft but these were never sent[mig 3/lagg 3/yak 3/anatra]or released by frog ,although there are some test shots still about,these were later released by Red Star on a short run in the early 80's