Was that range receptacle ever secured to something?

It's not too clear in the photo, but if the Romex comes up through the floorboards where I think it does, it looks as though it's too far from the wall for the receptacle to have ever been properly mounted. Or was there a very thick baseboard there once where the marks are on the wall?

By the way, what's that lying just on top of the plug/cord to the eletric saw?