Don't know where you could get that exact replacement except from a donor radio. I have one of these [pic] that I have had since 1966 and it still looks and plays great 44 years later. Allied Radio was selling those out of their catalog at that time, where I got mine. If there's anything missing on your antenna assembly and you need a picture of it, let me know. Are you saying that the largest section of the antenna, that is connected to the swivel ball, is cracked? That could be filed at the crack which would expose the brass underneath, and then carefully soldered, and then you'd have to file down the solder smooth. It might not hold so well. Might have to use silver solder. Actually my antenna broke off at the second smallest section. I just rigged a way for the antenna to stay stuffed inside its holder so I still have the chrome button showing by the handle, and I connected a piece of insulated wire a few feet long inside the case to the antenna and string that out behind the radio when I use it. I often will connect that to an outdoor long wire antenna anyway when listening to short wave. Just never got around to devising a way to fix it.