The local gun store has a early Texan: 20" BBl marked RC, straight stock with most of the varnish off the butt, brass saddle ring, serial# AB44xx, 85% bluing. Owner wants $350+tax, I offered $325 out the door, owner countered $325 + tax, I refused. we are about $27 different but I really don't need the rifle. When was this rifle made?