Invisible pictures

This is a very badly underexposed negative. It is a photo of a good old friend of mine, taken in 1994. At 1st I thought it was a clear negative. Then I noticed a slight bit of darkening on it so I scanned it. After planing around with the sliders in Adobe Raw I inverted it to get a positive image. There was/is a lot of vignetting & noise on it. It is also a blurry photo. Not a great photo by any means. BUT, since there wasn’t many photos taken at this time it has value. And well worth …