I found several other sources on line, and it's a cabinet scraper, not a box scraper. Stearns made a similar one, as did Starrett and Millers Falls. Stanley made a similar pattern, #82, especially for scraping floors. It seems to me we had one on Tool Talk not long ago that looked like the Starrett or the Millers Falls.
Box scrapers I've seen, like the Stanley, were essentially short bed planes on a swivel yoke (see the Stanley #70). They were used to scape off paper labels, yes, on shipping crates, but also paper labels on drawers in warehouses where drawer contents changed. Mine was from the old Thompson Diggs hardware company, one of about a dozen that were used in the warehouse. Thompson Diggs bellied up around 1987 or 88, and my partners bought the whole mezzanine floor.