Welcome to the forum.

That's a beautiful 1950 Target Model. And it's a Target Model whether or not it has a lanyard swivel. Swivels were optional on any commercial model back in the day, and still are to this day on a limited basis.

Factory swivels original to the frame and factory swivel additions are always 1/10” forward of center. The serial number on the butt of pre war guns was stamped off center if the frame was originally assembled with one. If orders came thru for guns with lanyard swivels and there were no assembled revolvers with them in inventory, the factory would not build a new gun if other revolvers that matched the order were in inventory, except for the swivel. In those cases the factory drilled thru the factory serial # for installation of a lanyard swivel before initial shipping. Also if sent back to the factory for addition of a swivel. But in those two cases the s/n is always re-stamped on the left side of grip frame, under the left stock.

Commercial N frame fixed sight models (non-target models) built after the wars on surplus military frames were often but randomly supplied with lanyard swivels.

Post war serial numbers on the butt are always off center to the rear, so adding a swivel didn't require drilling thru the #.

Swivels were often ordered on law enforcement revolvers.

Occasionally the factory installed a plug in the swivel hole if it was already drilled.

__________________
Jim
S&WCA #819