I'd really like to see these industrial/powered blades that are being discussed. THese look like shabrias; an awful lot like shabrias. The holes appear, BTW, to have been hand-punched, not drilled, and this is responsible for the ridgelike formation around them. Note the marks at the blade base of the one which still contains a rivet (? does not look like a bolt to me?), and its hand forged shoulders. The other seems to have a groove running out the end of its handle; trick of the light? Corrosion?
The cross-section seems to be flattened diamond with rather fine edges, judging from the damage?
|