I was just watching an old extrication training film from the '70s and noticed one of the LA County firefighters cutting the plastic stripping on a window with a large folder. I only saw the blade. Looks to me like a Buck 110, which would have been around then, as I also saw what looked like brass bolsters. But, then again, there were a ton of folders that had similar looking (and sized) clip point blades, as I have a Case Hunter two blade from the same era with a similarly shaped and sized (it's a bit bigger) blade. The firefighter pulls out the blade at about 6:46 through the film.