I do provide service and repair of vintage Rolex timepieces for models before 2011 (when Rolex terminated all parts contracts with non-authorized repair centers). I am, however, not affiliated with Rolex, nor am I an authorized repair center.
New old stock parts for popular movements (such as the Calibre 1530) are still relatively plentiful, but expensive. Aftermarket equivalents are also available for parts that are prone to wear. I can also find parts for older movements, such as the 1030 or 600 series. Aftermarket crystals are available for most Rolex cases, as well as crowns and case tubes. Authentic crowns are challenging to come by and expensive if found.