Anyone knows what this antique tool is

[nesmtl]

Hi everyone, does Anyone knows what this antique tool is ? It is written zssa 5mm, 7m 7m and 5m  and usa I think, it is very heavy, thanks

[mikeswrenches]

Hi nesmtl, Welcome to tool talk.  A wild guess is that it’s a device to hold ice skates for sharpening.

Mike

[nesmtl]

Hi, thank you very much for your fast reply. Your guess is correct. Your very good.
thanks again for your welcome.

[Northwoods]

Hi nesmtl, Welcome to tool talk.  A wild guess is that it’s a device to hold ice skates for sharpening.

Mike

Wow!  You are an outstanding wild guesser!

[oldgoaly]

Good guess Mike!As an "oldgoaly" who even bought a stone for the local rink to have a custom grind on my 1974 Riedel's. I would not have guessed that was a skate holder!
Any idea on the age of the tool? Wonder who's skates it sharpened?Eddie Shore? Toe Blake? Dit Clapper? hey I did it got a Slapshot reference in a tool post!