Then that's likely what it was. It couldn't have had a square badge indent like the 128/512K as it would not have fit. The SE had its inlaid Apple in the lower left corner location as well. So that's probably what you saw. The square badge had been dropped by the Mac Plus, changed by Frogdesign, so its unlikely it would have ever reappeared on the SE. It was designed during 1985, so I would fully expect prototypes to appear during 86.