Rare 1959 GMT Master 1675

[jamesivta]

I have a question, I have a 1959 GMT Master 1675. It is different from every other 1675 I have ever seen. The difference is that my 1675 does not say Superlative Chronometer on the face, it is the same face as a 6542 and says Officially Certified Chronometer instead. I did talk to a Rolex expert and he told me this version was a very early 1675 and very rare. I did confirm the model on the end of the watch and also the reference number to confirm the date. My question is, has anyone seen one like this before, it is in good shape, works perfect and shows appropriate wear for the age. I have been told it could be worth over $30K. Just trying to find out if anyone knows how many might have been made and any other suggestions on a possible range of value. Or any other information.