A Gillette open comb safety razor from the 1930s. But it’s had the handle replaced with a Gillette tech handle from the 40s.

In an image search, I found someone selling the exact same Frankenrazor which leads me to believe this may have been a popular mod back in the day.

As a corporate IT drone, usually the extension blocks come from on high and we have no say in what they are. Also, the users that are smart enough to figure out ways around the blocks are not who we are worried about protecting from themselves.