Reply by mafe

Don I think this is just some one who had two irons and stored them in the plane like that.
Perhaps one for rough and one for smoothing.
I feel quite confident that it is not a doubble cutting iron, think about the shaves, they will automatically get stucked.
Best thoughts,
Mads

-- Mad F, the fanatical rhykenologist and vintage architect. Democraticwoodworking.