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Found it! These are from an Erik Anton Berg price list from 1896:

209133

'Razor with double scaled blade. Etched steel shaft. (So-called "Tourist knife")'
'Razor with one edge exposed, as it...

I saw either a picture or a patent of it the other day, cannot remember which. It is supposed to have two sets of scales like a balisong or butterfly knife, covering both blades when closed or one...