Towers Double Lock

Good Evening,

I am in need of a key for a pair or Towers Double Lock (swivel chain).
Can anyone help me or maybe sell me a key? I did file a similar key down and drilled it out as well. I actual got it to work on one side (opened) but the other side was a little tougher. The key end broke inside. Luckily I was able to remove the broken piece.

Anyone?

Thanks

Tony