This medium size traditional boomerang was made in the 1960s/1970s by Frank Donnellan and Stephen Silady. The original design belonged to Frank Donnellan. Stephen Silady was Frank Donnellan's good friend and partner and Silady made the mold and produced many versions of the plastic Donnellan traditional boomerang for the retail market. Donnellan and Silady were both famous boomerang throwers and manufacturers in the 1930s -> 1970s. After Frank died, Stephen continued to produce the plastic Donnellan boomerang (1970s), but he replaced Frank Donnellan's name with his own. This boomerang is one of the earlier models, made before Frank Donnellan's death. The embossed logo on the underside reads " Champion Thrower Granville N.S.W. Derwent Made for Frank Donnellan ". This boomerang is in very good condition. The outer edge of the elbow has light abrasion from use, but no cracks or dings. I have not thrown this particular boomerang, but I have thrown similar ones. The flight range is about 20 metres. The flight is low and circular and the spin rate is high for the duration of the flight, so you have to be careful catching this model. These are still fun to throw. They look cool if you put a piece of reflective metallic tape on the tips and throw it in full sun.