Flatiron 1N bracing question

[acruzn]

What type of bracing or tone bars are used on the Flatiron 1N? I am interested in the pre-Gibson era, like around 1982.

Also are they set symmetrically?

angel

[Capt. E]

I believe they are all x braced, not tone bars.

[delsbrother]

Didn't the pancakes have A frame bracing?