Nine point sources appeared within half an hour on a region $\sim$ 10 arcmin of red-sensitive photographic plate taken in April 1950 as part the historic Palomar Sky Survey. All nine are absent both previous and later images, modern surveys with CCD detectors which go several magnitudes deeper. We present deep images 10.4-meter Gran Telescopio Canarias (GTC), reaching brightness $r \sim 26$ mag...