If be weary to cite Wikipedia on anything... Sunburst finishes were definitely not supposed to imitate a guitar left out in the sun for 50 years, though. I've read two passages about the sun burst finish. One was from a book about acoustic guitars, which takes about the French polish -something that still pops up from time to time in the finishing department at my cabinet shop, and the other was from a Fender book. I wish I could recall the name of either book, but both were read many years ago.Hmm...
Wikipedia says this:
Sunburst (finish) - Wikipedia
O.K. aged is not the same as worn but both imitate age, aren't they?