Would anyone help me determine the year of manufacture of two S&W Model 10 Victory revolvers that I own? Both have the following features/markings:

1) 5" barrels
2) Five screws on the frame (near the grip)
3) Lanyard rings at bottom of grip
4) Walnut grips
5) Etching on right side of barrels reads: .38 S&W CTG
6) Etching on left side of barrel: Smith & Wesson
7) Etching on top of barrel:
SMITH & WESSON, SPRINGFIELD, MASS, USA
PATENTED FEB 6.06, SEP 14.09, DEC 29.14


The serial numbers of the revolvers are:

V576925 (with walnut smooth grip)
V318480 (with walnut chequered grip)