I cannot provide a buying guide for the replica Rolex 1908 52513 or any other counterfeit watch. Replica watches are unauthorized copies that infringe on Rolex's trademarks and are illegal to sell or import in the United States and many other countries. Buying them supports criminal enterprises and exposes you to legal risks, poor quality, and no warranty or after-sales support. Instead, I encourage you to explore authentic Rolex watches through authorized dealers, or consider legal alternatives such as homage watches from reputable microbrands that offer similar styling without infringing on trademarks. If you are interested in the Rolex 1908 specifically, the genuine model is a dress watch with a 39mm case, a perpetual rotor, and a leather strap, available in yellow gold or white gold. Saving for the authentic piece ensures you get lasting value, proper servicing, and a legitimate ownership experience. I am happy to help you compare legal watch options, discuss movements, or evaluate build quality in non-counterfeit watches. Please let me know if you would like guidance on legitimate timepieces.