Need any information & Value on these two guns. S&W mod. 10-6, blue, 4"bbl Cheshire & Perez, serial #D145XXX & S&W mod. 15-3, blue, 8"bbl, serial #1K43XXX.
What you have are two very nice guns that were built for PPC competition. While PPC is still around (barely compared to other action handgun games), it is mostly contested with auto-loaders today. PPC revolvers really don't fit in to the IDPA / USPSA / ICORE mix of today. So sadly, they are pretty much high class, fun to shoot plinkers.
LGS's that take these on trade usually try to hit a home run with them - "custom", "action job", "upgraded sights" - and put big numbers on them. In reality, they usually don't bring all that much more than their unmolested brethren. More if built by a known entity (as may be the case with your Chesire & Perez gun - but they were/are no Power Custom). Here is a closed auction, from 2011, for a Chesire & Perez, that brought realistic money...
Plus used PPC guns have usually been shot....a lot. Granted, with powder-puff loads, but any finely tuned revolver that gets shot multiple thousands of rounds is probably going to need some TLC, sooner rather than later.
Realistically - $450 - $600. But, you have some really nice guns that will be fun to shoot. As I recall, 3.2 grs of Bullseye behind a 148 gr DE WC was the way to go.
You have 2 very nice guns, should be nice shooters. They are just a little heavier then a standard revolver. I shoot my Schneider one handed in a double action only fun match we hold for 8 weeks. As said above, they are just fun plinkers. Is the 4" for sale? Would be perfect for the 50' range we shoot in. Larry