The Oyster 62 was introduced in 1999 and replaced the Oyster 61 model.  I could not find any definitive information on when the production of the Oyster 62 ended, but it seems that it was replaced by the Oyster 625 model in 2013. The Oyster 625 has a similar design but with some improvements, such as a longer waterline, a larger sail area, and a more spacious interior. As for how many Oyster 62s were built, I found a list of 32 hull numbers on the Oyster Owners website, but I cannot verify if this is the complete list or if there are more. You may want to contact Oyster Yachts directly for more accurate information. Here is their website: https://oysteryachts.com/