I just purchased a Ruger P-85 MKII in stainless in good condition (excellent condition except for some scratches by the takedown lever, that I polished out with Mother's polish) for $359, while general browsing about the gun I found this:
STURM RUGER:
INFORMATION SHEET -THE RUGER P85 SAFETY MODIFICATION-
We are installing a safety modification that replaces the:safety and firing pin mechanism of the original Ruger P85 9mm pistols ,manufactured between 1987-1990.This modification does not apply to any P85 which has "MKIIR "stamped on either the right or left safety;the "MKIIR "identifies that the safety modification has already been installed.The modification also does not apply to any other model P-Series pistol (including the P85MKII),as this safety system is installed in all other models at the time of production. All Ruger P85 pistols should be fitted with this new safety system because a P85 pistol fitted with the new safety system will not accidentally discharge when the safety/decocker lever is engaged if the firing pin is broken in a particular way .That's very important! It can help prevent accidents caused by the user's failure to take the basic safety precaution of always keeping the pistol pointed in a safe direction,especially when loading, unloading or decocking...
Hope this helps, if not a quick e-mail or Phone call to Ruger with the serial number will give you the best answer reguarding the recall. Their customer service is top notch.