2. Customers rave about the excellent service and experience at the watch store, with many describing it as a nice and legit watch dealer that offers custom-made diamond dials & bezel Rolex Audemars Patek luxury preowned hard to find watches. They appreciate the genuine watches in excellent working order, guaranteed authentic, and sold with full satisfaction since 1989. 7. WatchGuyNYC specializes in custom-made diamond dials & bezel Rolex Audemars Patek luxury preowned hard to find watches. They have been in business for over 14 years, located in the heart of Diamond District in New York City. Customers can schedule a viewing appointment to see the watches personally at one of their offices. 6. - WatchGuyNYC has been in business for more than 14 years. - They specialize in custom-made diamond dials & bezel Rolex Audemars Patek luxury preowned hard to find watches. - The company is based in New York City. - They only sell genuine watches in excellent working order. - Every watch sold is guaranteed authentic and customers are guaranteed full satisfaction. - The office is located in the Diamond District.