First a thank you to you Forum members for your value/price inputs. I've sold several guns thanks to your advice. First gun is a 5 digit N" serial number (1971 MFG) 27-2 3 1/2". Came in a box marked correctly for this size revolver with target grips (correct black washer Goncalo Alves) and an extra pair of correct black washer unnumbered Walnut service grips. The white end label was missing on the box when I originally got it,
Next a 1970 K 90XXXX serial range 17-3 6" with Red Post White Outline sights, .500 Target Hammer and Trigger, with numbered black washer service grips, and correct Target Goncalo Alves grips. Has a Model 17 marked box and paperwork. Both revolvers are in very good condition.
Very nice guns, grips are great. Not sure on value of 17-3. I just bought a 17-2 for $550, but it was nowhere near the condition of yours and no extras.
Walt