He had been telling me it was a Smith 66. It is in fact a 686-5 4". It does not have the original grips but instead a set of Pachmayr Grippers. Condition is very good with some minor darkening of the metal on the trigger and the hammer. Otherwise it is very clean and in excellent condition. If I wanted more information, which letters of the serial number would be needed of XXX####? By the way, I got it for 200$ with 2 HKS speed loaders.