Hello
I did a search for Champion Forge 203-1/2 drill press and found your post on this site. I looked at your pictures and really enjoyed seeing the press. I then went back into my shop and double checked my press and low and behold it is a No. 204.
The camel back casting has the no, 203-1/2 on one side, but it looks like it has been ground on. On the other side under the return spring is No. 204.
Here are some pictures of my press that I bought in Tyler ,TX some 35 years ago.
Thanks,
Mel