What is an MV fixture you found that you never expected to be MV and by the looks of it, you assumed HPS?

My 70s Norelco HPS light.  I say it's unusual because it wasn't sold as a mercury vapor fixture.  It was sold as an HPS fixture, but it used an H39 ballast and was supplied with an S63 Unalux lamp.

My 70s Norelco Mercury Vapor light is another strange one.  It was sold as a mercury vapor fixture but has no ballast.  It came with a 250-watt self-ballasted mercury vapor bulb.