Ponte
Songster
I didn't find anything, when I did a google search, that looks like yours.
Not surprised, it’s pretty old.
Most of my tools are at least 60 years old, I find that they are of better quality than today’s tools.
I did a quick google search and freight harbour sells an electric sheet metal snipper for $35.00
They claim that it cuts 18 gauge sheet metal. Cutting hc by hand is very tedious and tiring, Buying this electric cutter may be a good idea if you lack the strength to use a hand cutter.