Serial # is 174-999XX with the wood inserts. Adjustable sights, 357, the barrel measured from the cylinder is just at 4" long and from the frame is 3 1/4" long. Can you tell me the YOM and I'm assuming it is a 4" barrel model. Haven't shoot it much but do like it a lot, saving my ammo till the crazy is over. Makes me want a SP101 too. Have a Single 10, love it and a LCR 38 for carry. Also a gold Ruger Lite than gets very little use, I've become a revolver man, sold my SR9c.