I remember as a school boy, they had a picture of it in the newspaper with the title 'LBJ'.
Which caught your attention because, LBJ was also the reference to the president at the time, Lyndon Baines Johnson...
but in this case they said it meant 'little bitty jet'.
I can surely see how it looked like a guppy in retrospect, especially when compared to the long, more powerful beauties it has evolved to.
Greg- California
( Airline watcher and admirer of all of you who are in the industry!)