The top gun is a Pre-27 with 6.5 inch barrel. I was wondering if anyone can tell if those are "Coke" grips
The bottom one looks like a friend of mine's gun he had specially made when he was competitively shooting. His brothers all confirm he competed against Miculek and he said felt honored came in third a couple times. That gun he had is heavy but perfectly balanced and trigger was extremely light in DA (He said about 1.5 lbs and used only Federal primers as were thinnest at time). He let me shoot it a couple times and it was just pure fun and enjoyment and how easy it made shooting good to be. I still could not put a cylinder full in the same whole (just a small fraction over original) free handed one hand. The gun was a modified 586 and was done in 1975.