IAS 58?

[Bstalder85]

I just stumbled across this little mystery. Has anybody any more info on it?



https://www.instagram.com/p/BnjlL94gPTj/?utm_source=ig_share_sheet&igshid=1vofime3g3c3i

 

[JohnL57]

It kind of looks like a multi-pump-from the scratches on what looks like the pump rod I'm guessing you stand on the pump and raise the gun up and down to pump like the old Benjamins.