28 Technical playthings, in particular model railways and model railway systems, and parts and accessories therefor, including track material, signals, lights, points, model buildings and background landscape materials for creating model installations, including buildings, bridges, trees, people and animal figurines; games and playthings, in particular building kits and models of land, air and water vehicles, and of track systems and other railway installations; control apparatus for games, toys and technical playthings; parts of games, toys and technical playthings activated mechanically, magnetically, electronically or by electric motors; experimentation kits being toys; metal construction kits being toys and accessories