In a message dated 1/28/2004 4:48:44 PM Eastern Standard Time, [log in to unmask] writes:

3M used to hand out mementos of pieces what they claimed were the first reel
of the audio tape
that they manufactured (or perhaps the first reel of 111) floating in an
acrylic block

Back around the early '80s, we were given a CD at the Edison Historic Site by Sony purporting to have been their girst CD.  Was it???
Don Chichester