Currently considering an alledged 629-3 Classic DX which is for sale. However,it shows NO signs of the laser etching on either side of it's 6.5" barrel. Box markings appear authentic (from pix), no extra front sights or factory target either. Seller alledges it's unshot but is listing it as "used" due to lack of sights and target. Does anybody have serial numbers with which I could authenticate this gun? Many thanks.