Ok it does not have any means to adjust the first and third slides on the fly. You have to pull the tubes out by hand. It does not have a stop rod on the third valve but has a stop rod on the main tuneing slide? I have not cleaned it up yet since it just arived and I am makeing dinner right now. Was this used to adjust from Bb to A etc????? I am just woundering why you would need a stop rod on the main slide? It is silver plated and has a pea shooter build. The valves apear to be silver plated. Some nuckle head ran them dry so they look badly scracthed but they appear to be true other then this. So afteer I get he cleaned up and oil and pop a mouth piece in her I will let you know how she sounds! I might lap the valves and see if that cleans them up. Ifnot I will replate them. I have been looking into buildingmy own plateing setup. I have already looked in to valve burnishing and reaming tools. Boy I love working on old trumpet's. This one is going to be put right back to stock 100%. Other then the scratch's which do not appear to be deep at all on the valves this instrument has zero dents and only a few small dings. The only place their is silver finish wear is on one valve cyclinder and on the N02 tuneing slide.