First things first - if you are still considering what tie bar to get, it's important to consider the width of the ties you typically wear. A tie bar should NEVER extend beyond the tie; it's clownish looking.
Once you've got the tie bar, it's also important to note that the tie bar is traditionally placed between the third and fourth buttons on the front of a shirt.
Hope that helps! If you are still in the market for a one of kind, vintage tie bar, you can check out our current selection here.