Herbrand Whatzit

[Plombob]

Found this the other day. It appears to be a sheet metal flanging tool. Herbrand made mechanic's tools, so I was surprised to find this. Any idea what it is for?

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[twertsy]

1948 catalog



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[wornoutoldman]

FYI those things bring a pretty penny on Ebay. In case you don't need or want it.

 

[Plombob]

Wow! They do go for big bucks!

Thanks for the info guys!