The product code is for a stock standard production M629 with a 8 3/8-inch barrel. Would of shipped with wood Target Stocks with speed loader cutout. If it has a high polish, someone did that after it left the factory. Many would consider that a deduct in value, though some like the look.
Feature codes:
S - Stainless construction
TS - Target Stocks
CT - Combat Trigger
TH - Target Hammer
RR - Red Ramp insert, front sight
WO -White Outline slide, rear sight