Hi and welcome to WUS. Nice looking GP in a 14k square case that appears to me as from the 1980's. It may have a hand wind mechanical movement. I like how the dial pattern is repeated on the bezel and bracelet. Because we don't have a GP forum you may want to ask about your watch on either the High End Watch or Vintage and Pocket Watch forums here on WUS.
Not fake, 14K so it was most likely cased in the USA. Have a watchmaker pop the back off and give you more information. Also, look around on Ebay for a similar one. I think there's a GP site somewhere, with a forum.
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