Contacting seller (investor) via Realtor

I’m in the process of putting together a buyers list and one of the areas that I’m looking is in the local newspapers real estate classified area. Most of the ads that say something like, "Newly Renovated” or “Newly Remodeled” seems to be a good starting point. The only contact information I have is their Realtor. What do you recommend that I say when contacting the Realtor? Is this even a good idea at all?