This is a Fernandes ZO-3. It's clean with no noticeable dents. Metal parts have some clouding. Sound can be produced from the speaker, and it works fine when connected to an amplifier. There is no crackling. The weak point, the battery box, is missing its original cover, so it has been replaced with an aftermarket one. Please check the photos. I think well-maintained ZO-3s are becoming less common. For ZO-3 fans, how about it?