Jupiter JUPITER Pocket Trumpet SPT-416 This is a Jupiter B♭ pocket trumpet. Being a pocket trumpet, it's quite easy to carry around (it fits in a backpack or handbag). I think the appeal is that you can play it anywhere. It's silver-plated. I don't think the plating wear is very noticeable. There are two dents, so please check the photos (photos 11 and 12). The pistons and tuning slides function without any problems. Before listing, I have cleaned and greased it. Although it's an older instrument, there are minor scratches, but I believe it can be played without any issues.